Joyetech eCom Mega 20watt. I am so delighted with this unit. For the last year I have tried out various units including Vision Spinners (I and II), and a 50w mod (IPV2), as well as the older Joyetech Twist which is what I started on. I have to say I am absolutely thrilled with the eCom Mega!
It is beautifully designed and built. I just feels really good in your hand. It delivers plenty of vapor. IMHO there is no need to go beyond 20w with this unit. In fact I usually have it set on the lowest setting which delivers copious vapor. The taste is clean and true.
The battery lasts a long time, and since it has a pass-thru charge I can plug it in at my desk during the day while vaping, and never have to worry about a dead battery.
I was a little put off by the cost of the replacement heads but truth is, they seem to last much longer than the ones I used in my Spinner. I vape constantly and seem to need to replace the heads only about once every 5 days or so. You can "dry-burn" them to clean them and they still have a clean taste. Also, initially I was put off by how big the unit is, but truth is, after a while, it doesn't really seem objectionable.
JoyeTech really did a great job with this. The cost of the unit and replacement heads is a bit pricey, but I'm guessing price will come down as more people buy them. In terms of quality, it is absolutely top-notch. IMHO, they put Vision Spinners to shame!
Right before I bought the eCom, I had purchased two Vision Spinner II's. Both of them sucked! They barely put out any wattage, and would require a recharge after only an hour or two of use! The seller and manufacturer refused to exchange them. It was really shameful, especially considering that the Spinner's have acknowledged issues and the manufacturer simply refuses to fix the problem.
Anyway, I highly recommend the Joyetech eCom Mega!!!