I guess I'd have to say in this particular case, the omission of USB2 from the interface choices is a bad decision. I know I'm not a big fan of its' inclusion on everything (seldom being necessary) but in this case, a USB2 interface would allow easy hook up of an external HD in case of the primary HD fails for any reason.

I think you are getting your wires a little crossed, leezone. That expansion on the underside of the G/E series is for a ROM expansion, nothing to do with the HD at all. In all fairness, if the SSHD fails on a Roland, you are just as hosed as if it fails on a Ketron. Probably more so, given how hard these are to find... Mind you, a SSHD is VERY unlikely to fail from playing stresses

But I still think that, as inexpensive as it would be to add, a secondary HD inside the Audya's case would be a better solution than hauling around a spare HD and having to hot swap on the gig.