Wow, all those rda's and you still can't get a decent vape , thats weird. When i started using it i got a very weak vape myself but figured out that the topper that comes with it is an awful single coil atty .
I also made a big mistake of using a higher OHM coil than most do . I believe it was around 1.1 ohm's and still no good at all .
Finally i said i will add another coil to it and try it with duals, while at it i also dropped down to around .6 ohm and BINGO .
The beast came to life immediately and almost knocked my socks off , dang man that was awesome.
Yeah I finally threw on the Velocity Mini that tops my Dripbox60 in desperation and it is much better..that one runs around .24 ohm with dual 6 wraps of 26g SS. Performance is similar to the DB. Was hoping to get some better performance with some higher ohm builds. Obviously a lot of playing around to do yet.