I had a silver/grey 2003 busa. Loved it for what it was designed for... high speed runs. It's also not bad to just cruise on. A bit more comfortable than the 10R for going to bike nights, slabbin' it anywhere, just goin' to town, etc... And the aftermarket for the busa is phenominal. You can get ANYTHING you want and some stuff you don't want for a busa.
I'd love to have another busa as a second bike. I'm not ready to have one as my main/only street bike though. If you're gonna get it in addition to your 10 I'd say go for it. I wouldn't be so quick to say give up the 10 for a busa though. :headshake
"Bottom line, when I'm on that bike, it's just me and God...And He better be holding on."- Stillie on SSB
Si vis pacem, para bellum...