In this range I would think that the Audio Mirror SET 45 have to be considered. It depends on your speakers and listening habits, but my 89db KEFs work very well with these amps. They are rated at 45 watts per amp, which some may think is low, but for SET this is very much on the high end. However, they have dynamic power at over 100 watts per amp.
As The Absolute Sound wrote, at $10,000 these would receive their top rating and be considered a must listen to amp, at their price they are a steal. Add some nice NOS tubes for rolling and you have a killer combo, very easily in your range.
Other brands I would consider in this range:
T+A
Audio Research
McIntosh
Pass Labs