I dont find dedicated MMO mouses to be worth it. The buttons can be janky to use efficently. On my druid, or most chars I can get by in-game with around 30 keybinds.
I will ALWAYS say Logitech because not of features that most people care about, but because of their patentented scroll wheel - Its 111/10 gut mode...I cant use other mouses that dont have fast scroll. Will never happen...Which sucks, cause I would like to look into lightweight 50-80 gram mouses, that slides well etc, but meeh...
I use a very old g500s. It has 3 great buttons on the side I can use easy and fast - Open my bags, auto walk and tab target...Yes tab target, something thats crucial to do fast in wow, I can handle with my mouse, its nice - Buttons has to be easy to use, which was not the case on my old Steelseries orginale wow mouse.
Edit:
https://www.corsair.com/us/en/Catego.../CH-9000091-NA Some1 linked this...See I can already tell you this does not work, at all. You just cant effectively use all these buttons, it becomes a mess. I do however love a lot of corsair products, the K70 keyboard I have had for 5 years now is A M A Z I N G.