I really like my NHT Pro model A-20s.
NHT Pro has been repackaged a few times, but its a solid product. For what you are asking, I'd go with:
NHT Pro
Model M-00 and the sonically matching
Model S-00.
The 20's are still available, too. They look a little different than mine, but information is available
Here. (Mine were called "A-20", and the fronts are angled in. I shelled out a grand for them half-price.)
Before I bought my Pros, I did listen to a number of other monitors, including Behringer and Mackie. Behringer sucked. The Mackies were good, but my preference was for the Pros. And when I found the Pros for half off, I had to jump. Look for free shipping if you end up buying online...the amp alone for my A-20s weighs about 50 pounds.