I've been using my original Proflight now for about 18 months in B757 and B737. I like them because:
- microphone is very good
- audio quality is very good , -helps a lot when receiving bad com
- they are very light
- Bluetooth connection is easy and quick, fantastic for making calls on ground
- music sounds good, although I don't use that feature much, but I'm also a musician and quite demanding on sound quality
- earbuds don't make my ears sore, even on 8 hr flights.
- the tap on earbud feature is very useful (to remove ANR temporarlily)
What I don't like is:
- Cable is thick and heavy (as they acknowledged in the version 2 update)
- Noise reduction on 757 and 737 is only usable in middle position. Too much hiss in top position and useless in bottom position
- It takes up a lot of space in the flight-kit; I'm not using the case that came with it but a holstered bag instead.
I've used Phonak and A20 in recent years and I wouldn't return to either one, but between A20 and Proflight the choice is tough, especially because of the fantastic ANR on the A20.