I am typing this on my fourth MacBook Air M1 computer. This one was bought from an Apple store in person. The keyboard feels different, better, more solid. The Trackpad feels better too. I think the second batch of machines is far better than the first. This is now a 16Gb memory, 1Tb SSD gold Rose computer - 10% off due to academic use - about £1,500. So far it is some how feeling simply great ! But - this is the first text I have typed on it - the day is young...
Apple refused to do a third swap, so shall give me my money back - I hope ! I have taken the opportunity to increase the memory as I'll never be able to change it. Also - as the shop actually had a 1Tb SSD version, I got that too. Rose Gold is rather splendid by the way - and it helps me tell which of my many machines is the good one...
This time I shall populate it fully manually - other than the iCloud stuff. I have cut back on iCloud to the Free option from the 1Tb because - basically - it was terribly slow, utterly unreliable and apparently my account's files kept getting corrupted in some way - Apple server end fault. This took me weeks to work out. I thought it was down to my kit - it wasn't.
The manual population shall be a real pain, but, there is a chance there is some unknown problem with my ancient data that caused all my problems. This I doubt, but I've nothing else left to try.