Polk from Crutchfield.
Sage advice indeed. You say that you have a 550 sq ft room. Depending on the dimensions that could be 20’ x 25’. Based on the room size, genre of music, the fact that you like a tinge of warmth, and robust bass; I would have to echo the recommendation for the new Vandersteen Model 2Ce Signature III.
The specs say it can be driven with as little as 40wpc, but I would probably want to upgrade your power amp at some point. And at $3607.00 retail (with stands) meets your budget objective as well.
Also recommend that you give John Rutan at Audio Connection a call. He is an expert on all things Vandersteen and will definitely point you in the right direction.
Let us know what you decide. Good luck!
While they're not a new model from a dealer offering free return, I think you could do a lot worse than the Dunlavy III's that are currently listed for sale on Audiogon. I am in no way affiliated with the seller, but I have had Dunlavy II's in the past, driven to great effect by relatively inexpensive Rotel amplification. They are efficient, have extended bass, and do well with all forms of music.