mine is from the box set, but Parlaphone has done great with all of them and it sounds good. Does not say on the Discogs listing but I would assume that the new set of stand alones are all pressed at Optimal as have all the reissues.
@yukbon maybe ? There is alos the Bowie thread: https://www.needlesandgrooves.com/threads/ch-ch-ch-changes-david-bowie-talk.422/page-41#post-604952