Looking to buy new mouse, what should I go for?

I have a Corsair M65 RGB mouse. It's pretty cool, it has several dpi settings that I can customise, a sniper button to reduce my dpi if I want to hard scope, mouse 4 and mouse 5 (buttons on the side). ANyways, it's entirely up to you and the game you play. There's models entirely dedicated to MMORG plays and that, so take a look, build an opinion. Not going to lie to you but the sniper button gets annoying so I have turned it off, but mouse 4 and 5 have really helped.