I'll fourth or fifth the Dynaudios. I have the Focus 110 and an NAD C372 integrated in a 13x18 room and have been very happy with them, including the very tuneful bass. They do have a warm but very natural sound--and you could do the above combo for well under your budget buying used. If you could swing the Naim it would probably be even better.
When I downsized the Dynaudios replaced the Vandersteen 2CE Sig II in my system, and they're cut from the same sonic cloth. I owned the Spendor S3/5 in between and found it forward in the midrange and coarse in the treble in comparison.
When I downsized the Dynaudios replaced the Vandersteen 2CE Sig II in my system, and they're cut from the same sonic cloth. I owned the Spendor S3/5 in between and found it forward in the midrange and coarse in the treble in comparison.