Hi - I'm looking for info on buying a vaporizor - I've seen different brands advertized, and there's a bit of a price range. W/ a lot of things, if you buy cheap, you've thrown away your money. Is it the same for vaporizors, or are the more expensive ones just overpriced? how much can I get a decent vaporizor for, and I'm wondering what some of the 'gotchas' are for a given brand (like - does the cartridge break easy or that kind of thing) thanks! LN