Great advice Neville - exactly what I was thinking, too! I went through a similar adjustment between my old Oticon Agil Pros (ca. 2013) and my new Oticon Opns. What I’ve read is that when you have an audiogram done, the results are basically a “ball park” figure of your actual hearing preferences. There has not been ONE time in all the 30 yrs I’ve bought & worn aids that I haven’t had to go back for pretty significant adjustments that differ from how the aids were set up (based on my most recent audiogram).
I think that not only do we get USED to hearing sound a certain way (in terms of frequencies and volume) but over time our preferences can change, too! So always assume that buying a pair of aids & having them set up is a bit of rocket science combined with plain ol’ fortitude to go back again and again till they sound how YOU want them to! Good luck getting the Phonak’s as good as your ReSounds.
Also consider FIT. I just found with my new Opns that I needed a snugger FIT with a power dome in order to achieve a seal that would permit more gain. Tinker with this and that - like Gepetto would do on Pinocchio’s ears!
Oh, and I see that Unpaidbill has just posted some degree of SUCCESS in today’s tuning. Yep, Step 1 done, on to Step 2 …