I would look at the Ssv. I consider myself a heavy user at an ounce every 2 weeks, and while that's far less than your consumption, i've no doubt the unit could stand up to the most heavy use. Ive used mine as my dd for 6 years with no degredation in performance. The quality and density delivered by the Ssv really helped my transition away from daily combustion. You wont be able to stuff a g in it though, not that you'de want to. I have the ground glass wand and would think a .25-.35 sesh of quality product would satisfy anybody. If you want more capacity maybe try the "fatty" wand as mentioned earlier in the post about the Lsv. Lots of wonderful vapes mentioned already and the Ssv is an old dog now. Even in its age i can't express what a wonderful, robust, dependable, good looking machine it is. Definitely deserves consideration.
Edit: Just saw you ordered the Volcano. Can't wait to hear how you like it.