CORSAIR NIGHTSABRE Wireless RGB Gaming Mouse

This mouse may not be cheap, but it's worth the money! Fits very comfortably in the hand and the weight is very pleasant. Plug and play if you work with Corsair Icue software. Everything can be endlessly tweaked and adjusted there. Multiple connection options, use the Bluetooth connection (without dongle) for my work laptop and 2.4 GHz connection (with dongle) for my gaming PC. Also nice and accurate and fast, ideal for FPS games

I chose this mouse because my previous mouse (a Logitech G) was/is no longer available. So far I am very happy with it, of course it takes some getting used to. But the ergonomics are especially important to me as a left-handed person. Most mice with "extra buttons" are ergonomically shaped for right-handed use. This one is universally used, but still reasonably ergonomically shaped. Unfortunately, the buttons are on the "wrong side", but you learn to live with that more. The software to change the assignment of the buttons is Corsair's iCue. In itself a well-finished program, only changing the buttons is quite a hassle and sometimes it works and sometimes it doesn't. But hey, with some extra fiddling it will probably work out fine.