Receiver ?

[s dog]

As others have said on here in the past, A receiver that lets say has 100x5 watts can not deliver a 100 watts to each speaker all channels driven, so then if you where to drive the mains with a stand alone amp would there be power left over for the center channel and the surround speakers because the receiver would only be driveing 3 speakers instead of 5, and would this make the center and surround speaker sound better because the receiver might be able to deliver a full 100 watt to each speaker 3 channels driven, if this is the case it would be nice to have a stand alone amp for the mains and maybe a monblock for the center speaker,heck maybe a monblock for all the speakers but then that might be over kill and very $$$.I had a power amp running my mains in the past but it went bad now im not sure if im missing anything or not, its kinda hard to tell with movies, i dont think it has as much head room as it did before in action scenes, i was just wandering how this delivering of power works with a receiver