I was dx with sleep apnea about 10 years ago and was given one of those machines. It was awful. I wasn't claustrophobic, but i like to sleep on my side. i also couldn't get used to all the straps.
But. like some of the previous posts have indicated, there are newer, more sophisticated machines available that really cut down on the straps and masks.
I might very well talk to my MD about the newer CPAP myself. Thanks for bringing it up.
Good luck.