I just got an aromazap vaporizer (AROMAZAP - Home) and I really like it. It is more efficient than smoking, imo and it really makes my weed last forever. It took a minute to get used to, but I've been using it pretty much exclusively for a couple weeks and now I prefer the way vapor tastes. Don't get me wrong, I still smoke, but it tastes somewhat nasty in comparison now, especially cashed hits (worst you get is a wood taste on a cashed vape hit).

Make sure you get a convection (hot air) type vaporizer, like a vapor bros or vapor doc and not one of the BC dome style ones (the ones that look like a glass jar with a hose), those just heat weed up on a tray. The ones that use hot air give you the most smoke-like hit, and they only heat the herb while you're drawing air through the tube instead of just sitting their cooking it.

Check out this website it reviews a lot of vaporizers, and as far as I can tell it's not affiliated with any of the vapor companies (thus somewhat un-biased.) :
MARIJUANA VAPORIZER REVIEW | Herbal Vaporizers

But you're looking around anywhere from 120-550 american dollars for a good vaporizer. I'd reccomend a vapor brothers one like this Vapor Brothers Vaporizer - FREE Shipping - VaporWarehouse

They're about 150 and they hit great, my friend has one. It has a much larger bowl than my aromazap one. Mine is pretty much for personal use, not great for passing around smokin with friends.