Well I know how you feel and I have been shopping for my first medicinal Herbal Vaporizer. There are ALOT to choose from.
What you need to figure out is Who will be using it?
if for personal only use, and you want an efficient Unit (something that wont use up your stash Quickly) I have heard wonders of a vape called Purple Days But it is in very high demand because of its efficiency and effectiveness. close to a 3 month back log. Then there is a vape that is similar called the myrtle-zap but uses a brass heat exchanger and the lead content is unknown so there could be possible health hazards which is why i wouldnt consider it. And I reciently found out about a new similar efficient vape called the Woodeez. A guy named Todd makes these. and currently no backorders. retails around 160 shipped in the states. which is a nice price for a vape that works very well. The purple days use to be sold for 150 but as of april 2009 i believe there was an increase to 180. now all 3 vapes are around the same size as a soda can. and I hear that the vapes are good for stealth read a story on another vaporizer site. how a user was pulled over for his companion not wearing a seatbelt and they just got done vaping, well he just pulled the stem off put it in his pocket and dropped can shapped piece of wood and the cop walked over and made no indication that he suspected or smelled anything suspicious and proceded to bust the passengers balls for the seatbelt and let him off with a warning. From what I understand the smell from vaping is recognisable to another fellow vaping enthusiast but those that dont vape dont know. they might smell something but suspect nothing.

As for other vapes good hitting ones would be like ssv silver surfer vape and the DBV Da Budda Vape and the arizer extreme. i was considering the arizer extreme for myself and was persuaded it was too much machine for just me but it would be good when socializing. As for the volcano I would consider it a definate waste of money. The volcano reminds me of the Vehicle The Hummer model 1 it wastes alot of fuel. while the DBV and SSV and the extreme would be the mid size cars as far as efficiency and the Honda Accord Hybrid would equal the purple days or woodeez for efficiency on Fuel (herb) usage.

I can let ya know from personal experience Yet but come this wed 1/13 I am ordering a woodeez.