I have been wearing hearing aids for 20+ years now. I would shop around and lokk @ phonak, seimen, octicon etcetra . I have a profound hearing loss and wear aids all the time on my rides. Yea it does carry over excess wind noise however inmo that is irrelevant when it comes to safety concerns and riding . With my hearing loss i really dont hear cars approaching until they are directly behind me or pass me. Once i get out in the country, less traveled roads i dont worry so much about traffic . They do help give you a better quality life. The hard part is getting used to them and getting people to look directly @ you when conversing. The bad part with hearing aids they will pick up all the noise around you say like in a restuarant.
I am lucky though i am a cochlear ear implant canidate @ the veteran affairs.

good luck with your decision