I upgraded from a Logitech G402 to a Razer Deathadder V2. Considering these are popular options under 4k, AMA and I will try to give you my 2 cents. : r/IndianGaming
Amazon.com: Logitech G402 Hyperion Fury FPS Gaming Mouse : Video Games
Razer Deathadder Chroma - HardwareZone.com.sg
Amazon.com: Logitech G402 Hyperion Fury Wired Gaming Mouse, 4,000 DPI, Lightweight, 8 Programmable Buttons, Compatible with PC/Mac - Black : Video Games
Logitech G402 Hyperion Fury FPS Gaming Mouse with High Speed Fusion Engine - Walmart.com
Original Logitech G402 Hyperion Fury Gaming Mouse with 4000DPI High Speed Fusion Engine 32-BIT ARM Processor for Windows 10 8 7 - AliExpress