I have a pair of Carver Amazing Loudspeakers (III model) that are some of the best imaging speakers I've ever heard, and they are TERRIBLY inefficient (@ 86 dB 1 watt/1 meter), which require LEVIATHAN amplification (which I have~). I love the sound of Klipsch, but for my dedicated 2 channel, the Carvers will forever be my favs until (if?) something better comes along....