My current front left/right amps are a pair of Denon POA 6600's which drive my ALS's pretty darn good. I can pick up a Deono POA 8300 reasonable to drive my center and surrounds.
OR - I could dump the 6600's and go with a Signature Grand to power all 5 speakers. I do not have the opportunity to hear the Sunfire though. Would I be dissapointed?