I am not an expert by any means. Got my first hearing aid last Friday.
I have a ReSound LiNX 2 but I plan on taking it back for the LiNX 3D but will ask about Phonak options when I go in. The 3D adds rechargeable battery and better (still not great) phone support on Android. I say that because at least I will be able to control the program and volume via an app but phone use and streaming are still going to require the Phone Clip+. I was doing some reading on the Phonak and it seems like this might be the case as well as with those. One question I have for you though is what Android do you have? While Android support expanded with the ReSound 3D, it isn’t remotely close to any Android. For example, my Pixel XL is on the support list but the Pixel (same generation but smaller screen) isn’t. So watch that with whatever hearing aid you look at.
As far as rechargeable battery. I look at it like this. It is the end of the day, I charge my battery and my smart watch anyhow. I am used to that cycle as I go to bed. I haven’t had my HA very long but here is my first week. I got it Friday afternoon. It worked great all weekend. Come monday I head to the gym in the morning as usual and I notice I really can’t hear anything with the hearing aid. I mess with it and turn up the volume. Nothing. I was right in thinking it was the wax filter being plugged. They told me about it and how to change it but didn’t say how often. It depends on how much wax your ears produce. I think sweating in the gym accelerated it some. Really go no use of the HA until I got home and could change the filter which takes 10 seconds. Tuesday is day two. Tuesday is cardio day so off the gym and I was going to stream a podcast while I run on the treadmill. I have a hearing aid now no need for headphones. Just as I get started it starts beeping that the battery is low so it stops streaming. I was just starting out what should have been my second day and dead battery. So today was really the first day where the HA worked all day at work. Not blaming it, I know it takes time to understand how many days to expect and how often to change the filter. For me 3-4 days on a battery is what I can expect. I now have batteries and filters in my desk at work, and at home. With rechargeable batteries, you don’t have to worry about starting out your day and within an hour you get the low battery alarm. Charge them at night and they will last the day. Many are sealed better for weather protection. But it might mean more down time for a battery replacement. The 3D I think has a user replaceable battery though and they last about a year.