All of my set ups are my favorites. Not a dime wasted in my opinion. Now I don't even have to unscrew toppers to change flavors. I have four devices and four Kayfun style tanks! 2 are Provari, one Black Copper Stingray clone of unknown manufacturer (still like it, not sure why), and one MVP 2 because doesn't everyone have one of those? Each Kayfun clone has a different flavor in it. This vape heaven I'm in however, will soon dissolve. Hubby's Tobecco Kayfun clone will not. stop. having. issues. The center pin arrived out of wack and the fill port leaked from day one. I can temporarily fix either one, but it never lasts. My fixes can't stand up to his abuse. So, he's taking one of my 4 Kayfun clones tonight. I'm going to try my hardest to pawn the Tobecco I have off on him, but I have a feeling that one won't last long with him either, and will result in much whining. I'm gonna have to give up an Hcigar or the Ehpro. Most likely an Hcigar. The Ehpro is my only black Kayfun, and looks too good on the Stingray.