Well I will jump in so I can follow the thread. As most of you know I am a big fan of the c2s with my 5ml Gummy tank. (a bit different than a MAP tank but the end result is the same). I get about a month with a new C2 and then just toss it. Anyway I haven't tried these yet because I understood that they would have a 5ml model and I want 3+ ohms, so I will wait. with all that said I still would do a dry burn 1st and if I see any little puff of smoke I would think it will never taste right. Well that's the way the c2s are. The only way to get that taste out is with a mini torch. and you have to take the tube off to do that.