I have 2 different mods with the nautilus tank and I love them. But I still have my Kanger evod ego batteries that I use for on the go. I originally started with the evod rebuildable clearomizer wasn't impressed and also want a glass tank. Right now I am running the Aspire Et-S and dont want to go any bigger then that. What I am wondering is will the Kanger Genitank Mini be a noticable upgrade from the ET-S and will it sit fairly flush on the evod battery. Any help would be greatly appreciated.