Whoa, I remember the Archimedes... My high school had them in the Business Studies department (along with a few Atari ST's in the Music rooms) but these were all replaced with fully-networked Windows machines in the later half of the 1990's.
As for the X68000... Had no idea it existed until recently (!) it has 99% perfect arcade ports for it (additional disk loading screens were added to the games I tried on WinX68k; Bubble Bobble, New Zealand Story, etc) which is pretty impressive considering how cut down the Amiga/ST versions were.
It's interesting to learn about all these unfamiliar 16/32-bit computers that were around before the world went PC/Mac. Thanks