I've owned (and sold last year) both an "Emulator EMU II" and "Emulator EMU III" and would recommend you put them on TradeMe. (Category: music-instruments/instruments/keyboards-piano/keyboards)
Really neat bits of kit.
There is a small but dedicated following for the EMU gear and both of mine I sold to someone locally with a very impressive collection of vintage gear.
(I'll pm you his details - it may be worth offering them to him directly)
Unfortunaetly both the EMU II / EMU III I had were not fully operational but not suprising as the guy I bought them from found them in the inorganic rubbish collection
Archiving wise until recently the disks were unreadable/unwriteable on a normal PC and archiving them was a right pain (load and dump via. MIDI from the EMU itself connected to an old MAC running the right software) Looks like you can now dump them using Kyroflux http://www.softpres.org/news:2010-10-10
The vintage synth / sampler guys seem to operate in an oddly parallel stream to our own - collecting, restoring and playing with old hardware / software