UPDATE at 8 Feb 2022.
I have now bought a machine - the Bernina Artista630
I'm aware that it may not be as up to date as I could have bought, but I got it for a VERY GOOD price including the Emboirdery hoop 150/400 plus the BSR foot.
So far I'm just trying to familiarise myself with all the sewing machine features, and haven't even attempted the embroidery aspect.
I want to thank all those who offered me their invaluable and experienced advice when I was shopping around and I hope they don't think I just ignored their input.
I shall now put the Pfaff QE4.2 back up for sale on the Forum for a keen price.
Annie x