Buds. Vaporizers in general are known for extracting much more THC from a given amount of marijuana than burning it, be it a joint, bong, or bowl. Basically a fair amount of THC is wasted by combustion, but vaporizers get the majority of it.

And after you've vaped your gram of weed (that got you as high as 3 grams smoked) you can take the ABV (already been vaped) and make edibles with it. You'll need at least twice the normal amount in weight, but it really works.

So vaporizers save you a SHIT TON of weed, and a great investment in terms of health and money. Vapor is much nicer on the lungs than smoke. The only possible problem is that some people don't like the vaporizer high as much: it's more cerebral and less "stoning", though a good indica will still couch lock you.