Sorry all,
It’s been a rollercoaster of a ride with ReSound. The aid was returned a few weeks back with no changes - it looks like the bluetooth/MFI signal for the ReSound One is working as intended despite my concerns.
Gone ahead with Phonak Paradise after I had a loan Phonak during the interim which sounded great in both hearing and Bluetooth quality.
If you are reliant on Bluetooth or value good quality Bluetooth audio, I would suggest looking elsewhere or trialling it out and testing as soon as possible to see if it is within your standard.