I owned an RC-62 before and the two 6.5" woofers added so much depth to the front that everything else i have listened to kinda disapoints. The RC-64 has four of those ! The new crossovers and tweeters in the Ver.2 Refference series have made the horns less shrill and i noticed no fatigue like before. The other thing i liked about the horn tech, is how it picks out the tiniest details of sound during movies; something my 150 doesnt do that great at lower volumes. Dont get me wrong. I love my setup for music and concert Blurays, but it is really lacking that 'Humph!' when it comes to movies.
Am i correct in assuming that its the large woofers on the Klipsch that fill that front soundstage ? I have a 10" Energy sub at the front and my M60s are set to 'small' with the crossovers set to 80. Ideally i think i should have gone with M80s but will get those when I get a bigger room.


Sanyo Z5 HD Projector w/100" screen
Yamaha RXV-663,BD30,HD-A30
Toshiba 55SV670U
M60s
VP150
QS8s