I have been vaping for about 6 weeks and have been using Evods and Mini Pro tank 2s on my Itaste VV 3 and Evod battey. I wanted to give a carto tank a try and I have heard a lot of good things about IBTanked. My question concerns what size tank I should get. I know the 15mm would fit the Itaste VV well, as it's about the same diameter. My concern is that I have read that the thickness of the 15mm tank is half that of the other tanks. I would rather not have a fragile tank and also the 15mm looks like the would have a pretty small volume. So, I wanted to know what everyone thought about the 19mm tank on a Itaste VV and should I get the standard or XL. I would like to get the biggest tank that looks good on the Itaste, so I'm thinking 19mm XL. Also I was thinking of trying the 2.0 ohm cartomizers first as I could pop it on a Evod battery when I'm charging my Itaste. (The 3.2 ohm carts would only give me ~4.28 watts with 3.7 volts, so I'm thinking it would not work very well). Thanks in advance.