So i need some help for finding mouse for butterfly clicking, I have been reading THIS but still need some expert advice in his decision.

bro, butterfly clicking is more of a skill and does not depend much on the hardware you are using. If you've practiced butterfly clicking enough, you can do it on any mouse. I am able to get 12 clicks per second on the cps test using my DeathAdder elite as well as my old Logitech m750. It's better to practice more rather than splurging money for these so-called 'special' mice.