Iwien I am aware of most of this, I never bothered with a cordless or a volcano for the terrible review of long time users.

By the lungs remark I wasn't saying pain-wise, just that it'll make you cough strongly for a couple minutes.

And yes, that is true, I have gotten a good amount of energetic highs, that soon turn into a couchlockish one. I figure this is because I really only vape at night and do it for sleep when I do. I guess its the tired feeling I have that changes it for me.
I still manage to utilize some of the former high before I go to sleep however, usually through a hardcore match in a FPS with my clan mates. That being because I don't have too much of a life.

Oh, and those vaporizing bowls for bongs discourage me, since the vapor consists of THC and pretty much only that, wouldn't a good portion bind to the water? This question came up when people started talking about "bongs don't actually get you higher, the thc will bind to the water!" and the counter arguement being "With all that smoke its insignificant!"
That and you still need a lighter which would add back some carcinogens.