I really liked my old Pockex so I bought a new one (only issues before were my fault... still learning) New one worked great. I should have kept old one as backup, but gave it to someone trying to quit cigarettes (huge mistake!) Put in a new coil one day and it worked most of the day, then refilled it and suddenly it wouldn't fire. I know I flooded it, but even then it should gurgle and eventually clear. Charged it up and tried again several times... nothing. I panicked and ran down to corner store and bought some cheap filter cigars... hated myself for that (been almost 2 months since I quit) Next morning I put in a new coil and it was fine. Today I filled it and same thing... would not fire. Smoked another nasty cigar. Everyone says do not overtighten coils, but this model has bottom of coil (where it contacts battery) submerged in e-liquid (I never understood this design) So I took a chance and tightened it more... bingo, fired right up. I also had stocked up a bunch of coils so kinda stuck with it for awhile (no funds to get a new device) I wish I had spent a little more and got a different device (wanted the new Aspire Tigon) I hope the Tigon does not have this same issue. Any recommendations for similar AIO device that uses similar resistance coils (0.6 ohm to 1.2 ohm)? Don't want super low resistance like some that use 0.25 ohm (smok for example)