For this, it's mainly personal preference as both are very good for gaming. The Viper V2 Pro had a really nice lightweight design that was perfect for competitive gaming. On the other hand, the Cobra Pro had a beautiful outer design with RGB lighting as well as a bit of a heavier weight which some people tend to prefer. The sensors (Focus Pro 30k Optical Sensor) are the same on both. So it should have a similar performance. Personally, the Cobra Pro would be my choice as it comes with two more customizable buttons than the Viper V2 Pro. Hope this helps!
8.5 out of 10 as it has some great features. The scroll button works well and the mouse comes with bluetooth connection, RGB lighting, and multiple programmable buttons. But, it's a little heavy so it'll make competitive gaming a bit more difficult. Plus it's smaller so while it fits my hand perfectly, bigger hands just won't fit as well.
