doood. nice. I mean, Bryan is going to be a far better expert on the subject, but I was in a studio that had one of these in the control room, and while I was waiting for hours on end for things like mics to get set up on the drums, I played on one. It does some really freaking cool stuff. It also feels great (something that matters when you're as bad at the keys as I am. haha). Consider me jealous. If I had a few thousand bucks on me and was forced to buy a keyboard, it'd be this or a Nord.
As far as cubase, I've never really heard anything bad, but I've definitely heard MORE about ableton and reason in the positive light. ProTools is kinda split...some people don't really like it, but use it because of compatibility/it's the "industry standard", but I'm almost sure it'll suit you better since the version of Cubase you have is going to be super basic, I assume.
Seriously though. Me=Jealous. ;) I need a new toy for real. If I ever get the $$, there's quite a list building up. New computer, iPhone, some kind of new effect pedal, a sweet keyboard, a scooter, a recording interface....so many things.
"Some men can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn."