I'm on day 3 of trying out a carto-tank; an IBTanked 19mm HalfLing with a Smok 2ohm coil. It is tiny, so use it on my ProVape-1. For comparison purposes, I loaded up a ProTank 2 (with Tatroe cap) and 2 ohm coil, with the same juice- 18mg Alice In Vapeland Sweet Tease. Also on a ProVape-1. Wicking isn't an issue with either tank- both wick this juice well. The carto is airy and produces a sweeter, more flavorful vape and the PT2 has a deeper draw, with a more mellow flavor. The lemon really comes out in the carto-tank, while the tea is more pronounced in the PT2. The PT2 produces richer vapor, while the carto-tank, somewhat lighter vapor- not so much less, but thinner vapor, if that is possible. I'm undecided as to which is better, for me. Both have their advantages and disadvantages. As it is, I'll enjoy both.