read up reliable sites reviews. there are various mouse with high dpi, which is useless for the majority of users, unless you only want to move a few mm on a 10,000dpi to copy paste an entire document on a 20+ inch monitor, just saying ah, dk its possible anot.
however, take note of the sensor hardware that is utilized, its plays the most important part in your mouse, besides favoured grip and required click force of course.
for me, i use g502, L/R buttons click require a little more force than a sensei or deathadder, used for about a month+, shouldn't be breaking in issues. but the various buttons allow me to have 2 profiles. 1 gaming and 1 casual. for casual, i bind the buttons to next/previous/new/close tab/copy/paste.
you can get mmo mouse if you require more for casual or gaming.