I am using a pair of Silverline Sonata II speakers (and the Prima CDP as well) in a room that is 2' larger than yours in each direction. I use them primarily for rock: Tool, Soundgarden, XTC, Catherine Wheel, Jeff Buckley, etc. I bought them for a few hundred under your price ceiling, and I am done looking around. They are phenomenal.
Many of the speakers on your list are superb. I agree as well with those that Maxxc suggested to scratch off your list. All, except the Silverline. No matter what amp I've heard with the Silverline (or Soliloquy) speakers, they sound fantastic. Tubes, hybrid, or SS work well with both of these speaker lines. And with the Sonata II, you will NOT need a sub.
The key is the synergy between the amp and speakers, and some of those on your list will be more finicky than others when it comes to that synergy. Let your ears be the judge.
All the best,
Howard