I currently have a Innokin SVD but on Sunday it quit working. It's not getting full voltage from the battery(s). It's so dim on one battery you can't read the display and when you put 2 18350 in you can read it and when you check the batt it shows 1.2 V on two freshly charged batteries. I just received a kayfun from Cloud9 vaping because when I ordered it there were no US vendors that had them in stock. I need a mod now so I can build it but don't want to spend too much because I'm planning on getting a ZNA as soon as I can catch one. Tried once and was close. I think I can do it next time. Lol. I was just wanting a good inexpensive mod to use in the mean time. I'm very disappointed with the SVD, this is my second one that had had problems since Jan. Seems like everyone else has better luck. Thanks for your time and suggestions.