High quality 8-bit sound, sounds 12-bit. Gives you have that great lo-fi grittiness, plus it has sliders that will allow for realtime filter control, try and find that on a present day sampler. Oh, and you can find them used for around $500 or less (they were $8,500 new)
Sample time limited to 17 seconds and requires hard to find 5 1/4' floppy discs. It is also huge, weighs like 50 lbs.