I have never tasted anything as nasty as a ProTank head. I have T3s, iSmoka and the original EVOD head that came in them but the ProTank heads that came insead of the EVOD ones I ordered with the clearos taste just awful.. nauseating in fact... its like a cross between fish and kerosene... and, yes, I rinsed them and that didn't help. I've tried and tried to use them with 8 different juices and can't do it. I actually got angry when I read that Kanger is no longer making EVOD heads like I got in them and only making ProTank ones which is why those were sent instead. My EVODs are useless now. But when one door closes, another opens. I never would have found the Joye Ego CC had I been able to keep using the EVODs.