Yeah, they both stopped producing 4 or 5 years ago for reasons unknown. Seemed like very decent, thoughtful, intelligent guys, and I still think their story-based trainers are the best around.
I don't think there is a set amount. It depends on the size of the bottle and how much you sniff with each hit. I usually have a bottle ready to open when the one I'm using basically no longer gives me a good buzz. That's how I judge it.
OH! I hope Isee one of my cocksucking pics in one of these videos! I need cock so bad! Thankyou for these videos which help me worship cock to the fullest! To see my pic in one would truely blow my mind! Thankyou keep up the good work!