My main workflow mouse has been the Logitech g600 for years. I love having 24 different macro keys accessible with my thumb (stuff like copy/paste, ctrl+w, ctrl+shift+t, enter, etc), but it's terribly un-ergonomic and the software is terrible (and doesn't let you configure settings except through its eye-watering UI). And afaict, Logitech actually stopped making them, so I have to snap them up whenever resellers put one on Amazon, since the main mouse button switch has a nasty habit of starting to double click after too long.
It's to the point where I'm considering just commissioning a hardware hacker to make me a custom mouse.
I highly recommend swapping switches, it's a noticeable upgrade
Was like $50 new, so nothing too expensive, has LIGHTSPEED wireless which has super low latency, but also has bluetooth in case you forget the dongle or can't use it for some reason. Or it's also really convenient to switch the mouse between 2 computers simply by pressing the button on the bottom, and it instantly switches.
Uses the HERO sensor which is really power efficient and has a slot for 2 AA batteries of which you only need to actually install 1. Lasts several months off a single AA battery, and also so I just use those rechargeable AA batteries with built in USB port under the cap, so I can just charge it from the computer if I need a little more juice.