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
Re-Review Logitech G303 G402 and G502 (Spectrum) - YouTube
mouse shell for Logitech G402 original genuine top bottom shell accessory mouse cover housing - AliExpress