Generally speaking, ASUS's specialty lies in design, and ASUS's wiring level can be said to be top-notch in the industry. Even if the yellow boards produced by third-tier OEMs at that time were of very low quality, they could still operate stably.
MSI's motherboards are relatively balanced. Products at mainstream price points have good value for money, and the workmanship and materials used are also commendable. In particular, MSI's UEFI BIOS design is very good.
Asus’ Pro series and MSI G series are recommended for quality products at mainstream price points.