you're not going to find much in the way of Ducs or Beemers under $10,000. For a streetfighter-style bike at low cost, I would steer you towards Yamaha's FZ6 and FZ1, Kawasaki's Z750 and Z1000's, Suzuki's SV650S, etc. All these are quick, nicely styled, and much less expensive than a Ducati or BMW.