Cookie Bite Hearing Loss: What is the best hearing aid?

My husband has a cookie bit hearing loss - he can hear low and high sounds; but misses everything in the middle. My voice falls into the middle range (or maybe it's selective hearing, that is still out for debate 🙂 I'm curious if anyone here has the same hearing loss and if so, if you've found a hearing aid that helps in this range. His hearing aids help in the range; while also amplifying the lows and highs - which is extremely painful and gives him a headache. This means he wears his hearing aids on special occasions and important conversations. Otherwise, this investments sits in his hearing aid storage pouch. Looking forward to hearing about the experience of others, as this type of hearing loss is hereditary.