I second Daedalus. Not sure what the current pricing is, but I suspect that the smaller models (the DA-RMa and Athena) would fit into the upper end of your budget range.
Daedalus offers 30-day in-home audition privileges, less two-way shipping and a $200 re-stocking fee.
They represent a load that is very easily driven, with benign impedance characteristics, high sensitivity, and the ability to handle high power levels, all of that resulting in exceptional versatility with respect to amplifier selection. In terms of power requirements they would be a fine match for your amplifier. They are widely admired by those familiar with them for the naturalness of their presentation.
And Lou Hinkley, Mr. Daedalus Audio, is one of the genuine good guys among audio manufacturers.
http://daedalusaudio.com/I have no affiliation, other than as a very satisfied owner of the larger Ulysses model.
Regards,
-- Al