The G502 is nice and all, but the discontinued M600 is the only mouse I've seen with a ring finger button which I adore. I will die on this hill. : r/pcmasterrace
Amazon.com: Logitech G600 MMO Gaming Mouse, RGB Backlit, 20 Programmable Buttons (Renewed) : Video Games
Logitech G600 MMO Gaming Mouse, RGB Backlit Logitech G640 Large Cloth Gaming Mouse Pad, Optimized for