I had a Zowie FK1 that I upgraded to from a Microsoft Wheel Mouse Optical. I liked the simple design on the WMO but it had no side buttons. The Zowie was fine but slightly bigger and round so grip wasn't great for me. I switched to a Logitech G102 Prodigy after watching Rocket Jump Ninja's YouTube video comparing it to a Logitech G Pro. It's small and light; great for me and I keep it at 800 DPI.