"Peter" wrote in message
...

It is for ocassional flights only e.g. 1x or 2x a year at 15000 ft,
for 1-2 hrs, and 1 or 2 people but expandable to 4. In Europe.

I have looked at the Aerox one with their oxymiser canulas, but wonder
if a proper mask isn't a better way to go, and it should use less
oxygen.

We have an Aerox system with cannulas and find it good. According to Aerox,
the system uses less oxygen than a mask would. We also have a Nonin Onyx
pulse oximeter, which is an essential accessory.

http://www.avweb.com/news/aeromed/181936-1.html

You're welcome to take a look at them if we get together at Cambridge some
time.

One of the things I hadn't anticipated was how much better I'd feel on
oxygen after longish flights even around FL100.

Julian Scarfe