I got a deal on a G503 Lightspeed mouse for $60; my old mouse was the Deathadder V2; I'm generally pleased with the new mouse, although it's a little difficult to use
Logitech G502 LIGHTSPEED Wireless Gaming Mouse
Amazon.com: Logitech G513 RGB Backlit Mechanical Gaming Keyboard with GX Blue Clicky Key Switches (Carbon) : Video Games