Mini Monitors under $500 used

I have a small room 10x10x8 that Im using as a den. Have a Nad 326bee and Marantz 6250 cd, what would you recommend for speakers? Detail, sound stage, and resolution are important to me.
thank you for answering
Triangle Titus would be a slam dunk.

These cross over fairly high at about 5khz compared to many monitors and have fantastic coherency in addition to all the traits you seek in spades. Perfect for a smaller room.
I'm currently listening to a pair of Usher S-520s. Pretty darn good for the money. Real lookers also.
anyone pair the 326 with a pr of Paradigm mini monitors? wonder if the PSB speakers or Paradigm mate better.
also just read about Silver Minuet supreme and Harbeth (which are much more expensive).
Second the Usher S-520. It's a great speaker for the price and size.

In that price range, I'm also a fan of the PSB Stratus Mini's.