The most vital part of the chain in audio processing is one’s brain, and what one does with one’s attention when listening. This’d be very hard to standardize/model even for 1 person. While and many people read other people’s comments about what they like/dislike about the sound quality and their hearing exp. with a model of HAs, someone else even with a very similar audiogram is likely (even in very similar acoustic/audio environment) to have different exp. and then write up that exp. in a post on forum in different manner. I still read people’s comments and form hypothesis about what my own exp. might be like, but truly the proof is in the pudding and testing things out for oneself.
Just taking something seemingly somewhat simpler “user exp. in pairing HAs with smartphone AND staying connected” … this is far simpler but even with idetnical HAs model and identical smartphone model people have different reports. Assuming it isn’t user error, given this variability, I hold out very little hope for objective/meaningful comparisons of HAs. In addition the skill and exp of a fitter or audi in tweaking the HAs to the user AND to that persons brain and hearing preferences is also part of the mix.
I am about via Costco to do a trial of Phillips 9040s and/or Jabra Pro 10. I’ll be curious to hear whether my own exp. resembles what some others have described - and not holding my breath that there will be tons of overlap.
Good luck to you.