In terms of rendering, both softwares are very easy to use, but to master them well, you need to cultivate your own internal strength and work hard on the collocation of environment, color and light. However, in terms of rendering sobriety, cool music is better than Sanwei. Sanweijia only has the highest resolution of 4K, while Kujiale can have the highest resolution of 16K. Cool music can experience membership treatment by signing in, which is basically free to use. My Cool Jiale account has never been recharged, and I get the right to use the member by logging in to Cool Jiale APP every day, but Sanweijia doesn't even have a customized module that can be recharged. Cool music members can use Ultra HD, and sometimes they can experience the rendering of 10K, 12K or even 16K when doing activities. The tallest 3D house is 4K, and the highest panoramic view is only HD. Some time ago, Cool Music gave me a rendering experience of 16K. I tried it, and it was clear, not bad compared with 3DMAX.
To sum up, if you focus on rendering now, I suggest you choose cool music, and then hand me the pictures with the most three flavors and cool music for your comparison.