I ended up visiting Currys yesterday morning. I was shown the cheapest current Air version at £949. It accepted my pairing request and played music. Not normal audio quality mind you! So, I bought one and went home. I have one Sky network but somehow the system duplicated an additional Sky network ending in EXT. I have never queried this until yesterday! No matter what I did, my original laptop would not connect to the normal network, only to the EXT one. The new one was polar opposite. This meant I could not use Migration Assistant during set up. I reverted back to a hard drive back up I had that was 4 weeks old just to get me up and running!
I then remembered I had bought a Time Capsule 2 weeks ago and set it up. I could not connect to it at all. I had not written the password down of course but I use the same sequence of numbers and letters for most things. Then in Keychain I found that I had used my latest secure password but had inadvertently left the caps lock on! By this time I had sorted out all the little foibles and after a days use am quite happy. I can close the lid, then open it later on and the hearing aids connect immediately. It makes me wonder now if it is worth shelling out for a pukka pair of aids, or perhaps I can find an equaliser or something to give me a bit of bass!
My Macbook Pro will go up for sale in time for someone to get an Xmas bargain! I might list it here first!