I've had NHS hearing aids for five years and they were fine. I recently went back for a re-test and asked for an upgrade. My new ones have a few more bells and whistles (actually whistles is probably not the right word for hearing aids!).
The bluetooth though, is just brilliant. I have always struggled with earbuds or headphones and the phone. The sound just seems to go straight into your head and no bulky ear buds just tiny tubes. I can hear on the phone, I can hear on Teams meetings and I'm listening to music so much more.