I’m more of a ski-slope audiogram than Tim but about the same loss at the very high end. My audi appears to be in at least the 60- to 70-year-old range and quite experienced from the way she talks to me. She is going to fit me with medium-power receivers and “power domes” - I discussed wanting to listen to podcasts and not missing too much bass, so I don’t know if the power domes are because of that discussion.
To help the discussion here, here are the specs for LP and MP receivers from the end of the Quattro manual. It looks like you get a few more dB potential gain out of the MP receivers but also a few more dB input noise (without noise reduction). Looks like the % harmonic distortion is actually a few tenths of a percent LOWER on the MP’s than the LP’s at the frequencies tested.
A bit of a sidetrack here, but I also discussed changing domes myself as my listening desires changed. The audi discouraged me from doing that saying that if I didn’t do a good job of getting the domes on, I’d risk losing one in my ear canal, which she said would be a bit of a hassle.