Help me choose which speakers to buy

I second DCM time windows

PSB's are what I would definitely suggest. Probably one of the best bang for the buck out there. I would want to move up as high in their line as you think you can afford. The Alpha's are a great place to start.

NHT used. just about any of their small monitors is a tight little fast speaker with beautiful lacquer finish on many. fwiw, you really should listen to a number of different types. with $200 more you could really take a big jump if you do some homework and buy right. small room now tho does not need extreme low bass so don't get too concerned about that spec. add a sub if you get to bigger space.

This might sound crazy, but Paul at bizzybee has been selling the TAD 805sd single driver speaker for 169. I had to bite for that price and I have to say I am impressed. I have it paired with an Onix sp3 and they sound very nice especially after breaking in and I haven't finished that yet. For that price plus a couple more hundred I don't think they can be beat.