Me thinks you got many a good bargain from the shops in Edinburgh.......Susan Rewis being one if it's the Micheal Higgins who sent us some good tapes way back.....
It's tempting to have the originals put onto acetate, like you say to preserve the originals......but isn't a DJ booked to play because of the originals he owns......thus making it a bit of a cheat not to play said originals.....