A friend of mine has an ST3 -- fantastic bike. It's got Termignonis on it and sounds fantastic!
I've ridden a few Ducatis, and really enjoy, them. I'm just not sure I want to maintain one.
If I got one, it'd have to be one of the smaller Monsters (796 would be ideal), as I just love the exposed trellis frame, but, don't think I could keep my license with one of the faster ones. I got a test ride on a Diavel. I don't care for the style, but, it was a comfortable and FAST bike. Really fast. Definitely lose your license fast.