So I slept with the new CPAP last night.
The pressure is set slightly lower than I'm used to, at 14 instead of 16. I notice this, but it doesn't seem to prevent me from sleeping, so maybe it's better. :)
The new mask, on the other hand, I'm not happy with. It feels a bit small around my nose and the straps are at their limits to get the headgear to fit. Tonight, I'll try my old mask and see if that's better.
But it's progress.