So I have been getting frustrated with my Davide, Aspire, and Protank 2 lately so I decided to dust off my old carto tanks and vape those again for now and call me crazy but I gotta tell ya I just love the performance of my carto tanks better I think. I use the IBtanks and the Boge F-16 tanks with either the Smok lo res pre punched single coils or the Boges (same specs) but I like the Boge cartos better. So I went over to Vapelite to order some more Boge cartos and saw this BOGE F16v2 GLASS TANK CARTOMIZER 4ML SILVER - $9.99 : VapeLite your source for Boge quality electronic cigarettes, Boge electronic cigarettes Not sure how long its been out since I havent been on Vapelites site in a while but its a Boge F-16 V2 Glass tank! I dont really care for the fancy decoritive metal sleeve over the tank but it is glass so thats a plus because some juices have cracked my F-16 and F-17 tanks in the past. Was wondering if anyone has tried these??? For 10 bucks you get the 4ml glass tank, drip tip and carto so its a good deal but I'm concerned about the end caps. I dought they are stainless like the IBtank caps. The rubber rings in the caps in the regular F-16,17 tanks go bad rendering the tank useless after a few months (probably why they are so inexpensive to begin with) and you cant buy replacement caps or O rings so just wanted to see if anyone used these and hear what you think. I dont mind throwing out a 5 dollar plastic tank after 6 months because the caps went bad but I'd hate to throw out a glass tank for the same reason. Buying another IBtank can solve all this lol which I probably will do but like I said for 10 bucks this isnt a bad deal as long as this thing lasts.