I was considering the purchase of a Sony ES until I read alot of the feedback on this site. As Harman Kardon seems so highly regarded, I checked their site, and was suprised to see the lower per channel ratings (50w). I'm a newby, but from car audio a decade ago I realize some ratings are understated, others overstated, etc... I also want to say the "high current" makes a difference...... can't remember. Anyway, I need a quality unit to cleanly power five Ascends. I will never listen to music on this system, just movies. That being said, do I need a tuner or just an amp and DVD? If reciever what are the good peices in the $500-600 range? Sorry for my ignorance. Thanks for your help.