i get mine from Vapors Etc. they are the Tru-Vapor 2.5Ω (or 2.4Ω) variety. they can also be had ad Truemanecig.
I get a ton of duds. maybe 40%.... the draw is too stiff. wont thread. taste like chemicals. burns on third draw (soaking wet mind you). et al...
but the ones that work, work. and rob at vapors etc is a great guy to deal with!
I am testing out a pack of the 2.5Ω Bauway cartos from madvapes. too early to tell.
also i got an auto 510 from MadVapes. made by Boge. 6 second cut-off. pressure switch. works pretty well. the one, MAJOR, drawback, is the approx. 10 sec shut down time if you reach the cut-off. but definitely outperforms the joyetech variety!
also thanlks for the video DaMulta! so, im taking it you'd recommend them? you said its from TW, so im guessing its a genuine Joye?