I wasn't happy with my ProTank - it didn't leak or gurgle, and it looked great - it just didn't taste QUITE as good as some other things I use (EVODS). UNTIL I changed two things - I removed one piece of wick, to allow
juice into the coil a little easier - and I switched to a lower resistance head.
It really surprised me, because at the time, I was
vaping at a set POWER level, not voltage - but the tested fact is, I like my
vape better with a lower resistance head at 7.5 watts than I do with a higher resistance head - at 7.5 watts. I can taste a difference.
So the bottom line is - you may have to try both, and see which works better for you!
(note: the one I had in was supposed to be 2.4 but was reading 2.7. The one I'm currently puffing on was supposed to be 1.8 but is reading 2.0. So I'm going to order 1.8 from now on)