Aaaahhhh, this old chest nut. Seems to be the new hit topic.
Coppermix fanbois, how are we? Haha
Mate if you got dosh, buy the coppermix, if you're stinge then get a npc 10"single button.
Easy peasy.
As for mileage, mr pig did a lot of abuse and the clutch still looks mint. So if you're worried about durability, don't be. Just don't ride the clutch.
Have you been riding the clutch you have currently?