Another point to consider are you into IT technology? Do you have a mobile phone? Do you have WiFi at home? Do you want all 3 to be able to “connect” to one another? It also depend upon how severe your hearing loss is. As well as the points that the poster above mentioned above. You haven’t entered your audiogram in your profile so we are not able to comment on that. It’s entirely up to you though but think about your life style, your work environment as well.
I myself have had Bluetooth aids for the last 6-8 years. Because if my profound hearing loss, I needed it for assistive listening devices. I would be without it now.
When your choosing an aid see if you purchase has a choice if battery sizes. I personally wouldn’t buy rechargeable batteries. Ask the Aud, size 13 lasts for approx 2 weeks. But you keep a supply of batteries at the office, in your wallet, in the car and at home. So if you do get the chimes it takes 2 minutes to change the battery.