The MX Master 3S is the best mouse I've ever owned, and I've owned a lot of mice. The sculpted shape supports your hand naturally. The MagSpeed scroll wheel can spin freely for 1000+ lines of scroll in a flick, or click into tactile mode when you need precision — it switches automatically based on how hard you spin it.
It pairs with three devices simultaneously (via Bluetooth or Logitech Unifying) and switches between them with a button on the bottom. I have one that flips between a MacBook, a Windows PC, and an iPad. Logitech Options+ lets you customize every button per-app. Works on literally any surface including glass.
Battery lasts ~70 days on a charge. Charges via USB-C while you use it. It's a tool that disappears into your work, which is the highest praise for any input device.