If you’re looking for a great wireless mouse with lots of buttons (i.e., a gaming mouse) and that Logitech G900 is a bit too expensive, the Logitech G602 is on sale today for $44.45. It’s been my daily driver for about a year now (replaced my trusty G502), and it’s awesome.
6 thumb buttons that can be programmed to whatever I want, full button remapping, high quality sensor with a wide DPI range. I’ve used it in finance and as a systems administrator, and the extra buttons help out a ton with scripting, switching between desktops, and productivity.