Any 2.5 Provari will need button tops because of the way they made the recessed contact point. This would be both mini and regular size.thanks for the shorten manual.
many clicks sure bothers me a bit,especially not wanting to stress/overuse the button,but i won't be using the menu to often i guess as I'm always on 12W and don't really care about the info(battery level could be useful at first).
as for the p3 or classic;i wouldn't usually look into tube mods,but i saw a good deal on the 2.5.
last question:
so 18650 should be button top,what about 18500 and the regular one(i don't even know which one is it)?