I have a BIG change to buy Roland W-30 (Im not rich) so could it be ,for the only instrument, great buy ;D Sorry for the text! Hope you understand!
Depends on what you want to do with it, i have one but doesn't really use it in every track. But it has some functions i like (and really miss in newer samplers) and a mean sound to it. I mostly use it for sample playback. It's a cool machine with a nice history, and besides all that it can be used as a plain simple controller of course for other synths etc.