Hello ! I just put in an order for a 22mm standard and I'm looking at the other sizes if I like it (15 and 19 for my on-the-go setup - the 22 will probably stay home). I mostly have Protanks and Aerotanks (normal and minis)... Could someone show a picture of both side by side ? I'm having a hard time visualizing it with the numbers I understand that the IBT are much smaller in total height ? Looks like the XL is a full 1cm smaller than the aerotank mini for the same capacity ? (not counting drip tips) Thanks !