the purple days is i think now 180 (when I got mine they were 150) - I know thats a little over, but if you're looking for efficiency (getting high more off less) this will change your life. I went from around a quarter a week to around a half eighth a week when I got mine, getting high in similar quantities.

Plus, you can re-use vaped stuff - cook with it or smoke it, although I'd say reserve smoking it for blunts or j's and only if you mix the vaped stuff with regular weed.

the da buddha was my next choice, and although I never got one I've heard only good things - same goes for the magic flight box