Soliloquy actually voiced their speakers using Sim Audio equipment so this might be a good fit with your current system. Either the 5.0 monitors or 5.3 floorstanders(not very big but need space to breathe) would fit your budget, and they sell some B-stock stuff that would put many manufacturer's A-stock to shame if you're looking for a bargain.
Others I would strongly recommend would be Triangle Titus or Zephyr(may be hard to find), Audio Physic Spark III, or Silverline Panatella?, a small $1500 floorstander that I think just came out.
You've already listed some of the others I would have mentioned, but since speakers are so personal I'd highly recommend at least giving these a listen before making a final decision. Best of luck.
Tim