Sorry, it’s been nearly half a year since I saw your question.
I have been doing audit work in the semiconductor industry for a while, specifically about production lines, QA and internal control.
I have d810 myself, and I will give my personal answer below.
First of all, for small external memory devices, I personally recommend sandisk, lexar, toshiba, transcend, and sony. Such a sequence converges. (This is after comprehensive consideration, not based on a single ranking of quality, cost-effectiveness, or reliability.)
Then, regarding the compatibility issue you mentioned, this is really a very vague concept. The so-called "compatibility" actually has many possibilities, such as manufacturers deliberately maintaining compatibility issues, or considering different product quality, to a pure slogan-like declaration of joint market behavior. Personally, I believe that so-called official statements are never trustworthy. Because the official does not represent your interests, but the professional agent represents the interests of that group, there is no need to consider things from your starting point.
Furthermore, digital products are actually incompatible with storage device patent holders. . What do you think? Whose problem is it? Sandisk and Lexar both have patents for two different versions of CF cards. . . It would be wrong to say that they are not compatible. The truly correct sentence should be: There is something wrong with the product itself. The inherent problems with this kind of product can be repaired for free, and if the repair is successful, a claim will be made if the repair is not successful. If your question is true, then my understanding is: the malicious behavior of the product itself. After all, Lexar has a large market share in North America. As a national industry in Japan, it is very possible for Nikang to push its own Japanese brand. But this behavior cannot last forever and will be corrected soon.
For example: I have used a personal SLR for many years, and my 810 does not have compatibility issues with old Sony and transcend cards. On the contrary, due to strict quality control, there is a tendency to be more optimized.
The following is my personal opinion and experience summary of each of the above-mentioned semiconductor brands. I hope it will be helpful for your future choices.
First of all, let’s talk about sandisk, which can probably be regarded as an established semiconductor company. Specializes in data storage equipment and is completely specialized in it. Don't be misled by its low price, high cost performance and market tendency. It is actually the top R&D and manufacturer in the industry. Not to mention much, the meaning of its existence is to streamline data application and reduce the costs of other companies in this area. I have studied their financial statements and production documents, and they are very abiding by the rules, and there are no problems with internal control. Although there was an adaptation period after coming to Shanghai in 2006, it has rebounded now, and product quality is very guaranteed. From my audit point of view, I am very satisfied.
Lexar, which can only be described as "resounding", is sandisk's biggest competitor. It has almost no shortcomings in all aspects, and it was also once the industry leader. But I was born as an accountant, and I complained a lot about not being able to run my company well. There are two points to make here. First, it currently exists as a department after being acquired. Tejas is no longer like Minolta. The key is to no longer have "control" over yourself. This is important. Secondly, generally in physical stores in North America, the most common brand you see is Lexar. Because of its brand influence, its price remains high, so the profit margin is very sufficient. But this is not good news for consumers. In fact, it is an exaggerated price, and there is no difference in quality from sandisk. Because the final quality of the product is mainly caused by the five aspects of design, manufacturing, logistics, quality inspection, and internal control, and there is no difference between the two companies in these five aspects, so it ranks second because of its lower cost performance.
Toshiba and Sony, nowadays, these two companies are very similar physically. I personally recommend Sony because of my trust in its brand. All things considered, I will not buy it. . Sony's products can only be described as good, but the price-performance ratio increases linearly. You can only benefit from buying its more expensive products, while its cheap products have lower performance-price ratio.
One good thing about Sony's products is that when you don't know about this type of product, it is a benchmark and you will never be fooled if you look for it. Toshiba is similar to Sony in that they can do everything, but the difference is that they are not proficient in anything. The statement that Toshiba is Japan's largest semiconductor may be true, but it is an exaggeration. It has always been on the people-friendly route, with small profit margins, and it is involved in all fields, so where are there enough resources to invest in research and development? So after so many years, it is understandable that now, when others come up with something for the tailgaters, I would also come up with a consumer-friendly model with similar technology. There is something called "improvement" in Japanese financial statements, which I personally feel is a bit false. . . So no comment. (Actually, I didn’t understand it.) But I ranked Toshiba in the third place because of the consistent quality and low price of its products.
Lastly transcend. This company is small and from Taiwan. Compared to Toshiba and Sony, that brand is indeed inferior, so the price is low. Compared with sandisk and lexar, the technical advantages are not obvious. The last three companies actually started very close to each other, but Taiwanese companies are not qualified to accumulate technology. They usually sell what they have and make money out of their pockets. But on the one hand, these digital equipment companies in Taiwan are very good, with low prices, and they have to focus on quality with such a small profit margin. . It is already valuable. The problem lies in design and technology. Taiwan's products are very good in terms of production and internal control. Since it does not have the ability to accumulate original technology, Transcend works hard on re-innovation. His products always have their own unique design ideas to achieve high performance and thus surpass other products to occupy the market. But on the other hand, Taiwan's overall technical production equipment may be "unable to supply" such high-efficiency designs, which may result in points being reduced. If you are pursuing function enhancement and efficiency as a priority, transcend can be ranked ahead of sandisk. But starting from the actual situation, under the general environment, such as the same 800x conditions, a little performance in multiple places may not help. At this time, the heat generated due to the particularity of the circuit arrangement, or the seemingly imperceptible expansion caused by uneven local heating, can be eliminated. Personally, I am very optimistic about transcend, so Fang is in third place.
(The above example is my actual experience. Transcend’s SD CF hard drive has overheating phenomenon, but there is no safety hazard after years of use. Personally, I think it is within the acceptable range and does not affect the performance. Its performance is higher than that of other brand products. However, it does not rule out the small probability that some products with less than 5% to 3% may have quality problems due to batch or various reasons, which need to be checked in time after purchase.) p>
Finally, the thing I don’t recommend buying the most is toshiba. If you don’t take into account its low price, there is really no reason to support it. However, in terms of price, Sandisk is not bad, and those with a certain amount of knowledge can buy Transcend. If you have money, buy Lexar as much as you want. He said he didn’t understand anything and just wanted to feel at ease with sony.
Above.