Group Poll :Oxygen

Do you own/rent/borrow a portable oxygen system?
Which brand?
Likes/dislikes regarding the particular brand?
System features?
Size/capacity?
Typical altitude flown when in use?
Comments please.

I considered all my options with respect to oxygen and ended up with the
Precise Flight System. I ordered the 'M' cylinder one with two of the
demand valves and two regular devices. Four face masks and all the other
goodies, of course. Last Thursday I went from Tucson (KAVQ) to Portland,
OR (KPDX). Mostly, we were at 14,000 ft, IFR. I returned home on Sunday,
mostly at 15,000 ft. The trip was 7.1 hours up (with weather deviations
and a precautionary landing for weather) and 5.9 hours back. 13 hours
total flying time. Probably 12 of those hours on oxygen. Two people. The
FBO didn't completely fill up the tank (1700 psi) before I left, but I
didn't run out of oxygen. There isn't much left in the tank but it
appears the demand valves allow more than 24 person hours on a tank. I
also bought into a transfilling system with another guy at the airport
so filling the bottle won't be expensive.
---
Ken Reed
N960CM
2001 SR-22