Chuck,
Thanks for that. I knew it had stability problems, but I didn't know why.
Roxy,
I don't know specifically what your "purpose" is, but did you know there's a new two-seater gyro around, hopefully about to be OK'd (or whatever the official word is) by the CAA in a couple of months. It's called the ELA or ETA; can't remember which. It looks a lot like the VPM, but is half the price - about £24,000. Roger Savage Gyroplanes up at Carlisle has one; I saw it and sat in it at the London Air Show, and as far as I can tell it seems like a nice little machine. And it's probably safer than the RAF2000; I know Roger Savage isn't too keen on those - or wasn't when I went up there a few years ago. Might be worth looking into.