Agreed. I also had the Sensos for many years, and while I liked the great sound quality they put out, the Naidas are just a far more advanced and powerful device.
Keep trying. I just had a new program session last week that ended up being a step backwards. Now I need to go back in and have old configuration set and go from there. It's an ongoing process.
I remember having a step backwards also. The Phonak rep decided to input a program she devised to help remove the background noises I had complained about. It ended up removing the bass sounds that make up parts of the speech sounds and I could not hear my wife speaking intelligibly (maybe that was a good thing? ) Once I removed the program input (via my audi) and made adjustments with the bassboost, everything was positive from there on out.
A successful programming of the Phonak Naidas depend on how experienced the audi is regarding Phonak programming software as well as their knowledge in what causes certain hearing issues.