I've been a fan of Classic Audio Reproductions for a long time- 20Hz-45KHz response, 16 ohms, 97 db. The field-coil powered drivers have the resolution of the best ESLs with dynamic range that is hard to beat, all in a package that sets up even in smaller rooms very easily.
The MG20.1 has always struck me as a best buy. Full range response with plenty of resolution, not too hard to drive either.