I've used Evods, iClear30, and Smoketech Aro, Protank II, full and mini, and Davide Pyrex tanks. I've had the best luck with the PT II's. I have 5 PT II's and 8 PT II mini's and have no issues with them leaking ... or corroding. One tip I think is that I don't take them apart to clean them so I'm not damaging the o-rings, plus on the PT II's, I have the adjustable air flow that is closed where it attaches to the battery, like the Aero Tank, unlike the minis where the head comes in contact with the battery. The reason I have so many is that I tend to rotate between several flavors of ejuice and don't want to spend the time to keep cleaning my tank when I change flavors. I've not had good luck with the Davide Pyrex mini tanks though. I bought them thinking they were cheaper than the ProTank but they all leak ... not from the bottom but from around the glass tube, so they sit in my drawer. Haven't tried the Kayfun or Nautilus tanks yet but it's on my bucket list.