Vapolution!!!
This site has some good non-biased reviews...Your online guide to Vaporizers.
I borrowed this lovely beast to a buddy here at work. He came in this morning (late) with a big-ass smile on. He thanked me, bowed like buddha and vowed to buy one. He said his girlfriend acted shocked when he packed it up this morning to bring back to me. She whined and he promised they'd be buying one. It is a good unit fosho - and there are other good unites out there. I've tried the Vaporwarez, Volcano (great unit, but $$$), VaporGenie, homespun devices withg the guns and the Vapolution is superior in most every way:
Taste - Vapolution! with glass on glass for supreme taste - no metal screens
Warm-up - Vapolution in 4 minutes!
Service - unbeatable - they ship QUICk (got mine in 3 days, inconspicuous packaging too) and they back it up and are very kind
Design - slicker, smaller and portable! includes a car adapter along with 2 whips, 2 bowls (one small, one large (not quite large enough for me though))
It stays clean too. I just cleaned the whips and bowls for the first time yesterday and I've had the unit for a few months. The unit itself doesn't need cleaning. And the oils from the whips and bowls are incredible!!! Weeeeeeeeeeeeeeeee....
Good luck and happy vaping! Vaping and Vapolution were the Best decisions of my pot inhalation life.

If your in a richer market, I understand the Vapezilla is the Cannabis Cup winner and is gooood also. Vapolution!