I am 70 and have been wearing hearing aids for about 2 years now. I spent several months trying different ones and read everything I could find.
There really are not that many many manufacturers of hearing aids in the world. The difference is in the guts of the system, how many microphones, filters and basic electronics. They are not all the same.
My first stop was Miracle Ear and after about 3 months of trying different ones that got up to $10,000 or more and messing around with constant adjustments I gave them up. They are selling service, I heard that over and over. I really just wanted to get my units, get them set and go on with life, not be tied to my tech.
Second stop was a company that sells Oticon. They did some testing to confirm the testing results I already gave them and she gave me some to try. They were set and worked right away, I was comfortable. The price was less than Miracle Ear and had some service with it. Can't recall the exact number, maybe around $6,000 or less.
I attended one of those evening meals, hearing meetings where they try to sell you on their product. I felt like all they did was bash anyone who wasn't a true audiologist and those that sold anything else. Their stuff was $12,000 and I never darkened the door of his place.
I kept doing some searching and found a place called Embrace.
https://embracehearing.com/ I looked at their stuff and talked to a rep several times weighing my decision. They came out with a pretty major discount and I went for it. Seems like they were a $2,500 range. They are Phonak with a slightly different number on them. They have two mics, I went with rechargeables, cleaning stuff, extra parts, pretty turn key. They had my tests and an audiologist called me and asked a lot of questions. The main things for me were I couldn't pick the soft voices of some women and I teach a lot of adult Bible Studies, I am in a church setting often with lots of people in front and behind, I hunt and shoot and there were some more variables. She set all those up in my app and downloaded the app and have been using it ever since. I can text her anytime I have a question which is very rare. Yes, it would be nice to just take them to someone and tell them to check them out and clean them. I have cleaned mine twice and it takes maybe 10 minutes. I can adjust anything myself. I have one that didn't charge on night and she suspected it was my charger so she sent a brand new one and I have never used it, the old one worked after that. No questions on supplies, I just say what I need they ship. I could try them for 45 days.
I take mine off at the range as I was told to do that. They are so sensitive they pick the sound up right through my hearing muffs. I missed bird searson but expect to hunt with them in so I can hear birds running and getting up sooner. Mine are behind the ear with various options for the ear piece. As for batteries, there are opinions both ways. If you travel you now have to take a charging station with you and don't forget it. With batteries, all you need are batteries which last longer than I expected. When we are headed out of town I have a plug in with multiple receptacles and I have my hearing aids and phone charger attached and just unplug it, throw it in a bag and I have all my rechargeables ready to go.
One note, they are not perfect, none are. They do help but will not solve all your issues, that is just the nature of them.