The Phonak Marvel seems to offer the best connectivity out of any hearing aid on the market now. Any Bluetooth device, whether it be a smartphone, computer, etc can be streamed to the hearing aids, in stereo.
Most importantly, you no longer need to hold the phone near to your mouth! The Phonak Marvel has built-in microphones to pick up your voice so that you can hold a phone conversation through your hearing aids, without ever taking your phone out of your pocket. This to me is a far more intuitive option and I’m surprised that none of the other manufacturers of the made for iPhone hearing aids has done this yet.
Sold as a pair