Get one of these:
Logitech MX Master
Do not pass GO. Do not save your $65. Go to Amazon.com right now and buy this mouse.
You won't be sorry. I've been raving about this gear since July, 2015. I paid list price ($99) back then and wasn't sorry I did. If you need/want a new mouse and don't buy this one you either 1.) don't have the money or 2.) have no use for the most feature-rich, accurate, comfortable mouse available or 3.) are the biggest knucklehead imaginable. (Can't be #3. You're smart enough to read MacTexan.com.)
No questions. Just do it.