The prodigy passthrough, is the best device for vaping, that is currently out there.
First of all, you can buy 3 adapters for different atty's.
Secondly it will allow any voltage to pass through it that is inputed.
The chinese pt's are blocked at 5 volts..
The prodigy is strong and well built.
I think that this pass through, with a BE112 801 atty, and a good powerpack. Is the best vaping alternative there is today.
If you want to take it a step further, you can buy a powerpack (Tekkeon) which will allow you to vape at different voltages.
here are pics of the passthrough, a 5 volt Kensington powerpack, and a Tekkeon variable voltage powerpack...