I have had my GH for 3 weeks and I have a pax2 and even though I like having both, I think you made the right choice just getting the GH!
At this point I only use my pax2 for vaping my mix of tobacco herbs and weed as the pax2 is great for tobacco and frankly with the efficiency of the GH I'm kinda afraid to try tobacco in it lest i end up in a nicotine coma!
The first thing you'll notice between the two is the flavor of the GH is FAR superior. Also you can get way higher from way less weed. The pax2 needs to be fully packed where the GH will vape even the tiniest amounts and get a few tasty powerful hits.
mod note: Non-comparison comments removed
When you think about the price of a GH vs. a pax2, if you really need to stand around in a circle, I think the solution to that is just get two GHs! In all seriousness I'm excited for you, the GH on heads up comparison really makes the pax2 which is elegant and fine, kinda obsolete :-)
One more thing, since I still have a pax2 I can do silly experiments, I turned my pax2 on to temp 3. I then loaded a GH turned it on, took 3 rips and was high unloaded the GH and put it away before the pax2 was ready ... just to give perspective.
Also cleaning is way easier, like almost non-existent.