Dunlavy or Dynaudio would be my first two choices. Dunlavy's would cost more and require more space, but might sound better depending on your musical tastes. For Dynaudio, you could get the Contour series - 3.0's for L/R fronts ($5500), the matching center ($1300), and a pair of something like the Audience 50's or Contour 1.1's for the surrounds ($900 and $1600) respectively. These are all list prices and it still adds up to less than $10K - you could come in under $5K if you go used. You could move up to the Confidence series used and keep it to $10K if your associated equipment is high quality, you'd value the higher quality, and the $10K is ready and waiting to be spent on this, but you could be very happy for a lot less. I've got the Contour setup described (yes, purchased used), but if I had the time and money to play around, something built around the Dunlavy Alethas and SM-1's would be a lot of fun to try and I'm sure very satisfying.
