I am currently using a Vivi Nova tank that I order with my ProVari & it has the same diameter as the ProVari so it site well in my carrying case. I really want to order a glass tank & like the design of the Triple V Sidewinder tanks a lot. I am worried because of how many ml's they are said to hold, that they will wind up being a lot wider than the ProVari itself & it would make it too tight of a fit in my travel case. Plus...it would look funny to me & I am a bit OCD about things like that. Has anyone tried out one of these tanks?