Really good, we've had some fun with it, a true hit at parties for sure, plus I like the no smell etc. I had two of the original models but they released a new Extreme-Q model at the beginning of the year so I bought two of them as well
Gave my older gen Extreme's to a friend.
The new "Q" as they call it is really nice, it runs a LOT quieter than the previous gen, hence the "Q" at the end of the name I guess. I don't have to turn up the volume on the stereo or TV when I'm blowing a balloon, lol, a guy on a forum wrote he likes the quiet fan because his wife can't hear how often he's blowing balloons downstairs, not because she minds, rather he doesn't like to share, LOL.
The main reason I bought mine is because it runs a LOT quieter than my old Extreme's or my Volcano, (yes, I have a vaporizer collection
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I like the light weight glass mouthpiece, it's more natural than the big volcano valve imo and it's very smooth on the throat, about the smoothest I've tried, tastiest balloons, they say it's due to the use of glass ceramic whereas the 'cano has an aluminum heating block and plastic and when warm air comes in contact with metals/plastic that's where the 'sharpness' comes from .... that's what I've learned from my extensive vape research.
Actually it was trying a friends Extreme that sold me on it, I went home an ordered two right away, lol ...
http://www.arizer.com is the link, I see the new Extreme Q isn't on the site yet, but they have them in stock no doubt...