
The Cougar Revenger Pro 4K is a tricky one. It launched at $69.99 in the US, but has been pretty much impossible to find at that price recently, with Amazon currently only listing a few at around $95. At its MSRP, it's well worth a look - undercutting more mainstream brands with 4,000Hz wireless polling (in theory), a solid Pixart 3395 sensor, and a fantastic battery life. If things stay near $100, though, things aren't quite so clear.
This is the threshold where some of the best gaming mouse models on the market come to play, and with a cheaper build quality and a problematic 4,000Hz polling dongle, the Revenger is going to struggle.