I am using the Sunfire Cinema Grand to drive Legacy Classics in a vertical biamp configuration, and I love the sound. My room is much bigger than your's though. In my room, I am down about 4 dB at 20Hz so I really don't feel the need for a sub woofer, though many will tell you you need one. If you can find either a pair of the Classics or the Signature III's they should work well. The classics usually run around 1200 or so used, so that would fill your needs. That doesn't include the center channel, but the Legacy SilverScreen II center is one of the best out.
Unfortunately, I have not had a chance to listen to any of the speakers on your list, so I can't do a valid comparison.
Greg
Unfortunately, I have not had a chance to listen to any of the speakers on your list, so I can't do a valid comparison.
Greg