The one aspect I really like regarding separates is that if an amp self destructs, all you need to buy is a new amp. Also, they typically have much more current than an all in one box system such as AVR’s.
Also, as technology changes, it is generally centered around the processor, and not the power end. You can always upgrade the processor, sell your old one on eBay and still use the old power amps.
You can go with a two channel 200 watt amp for the mains, and another five channel 75 watt amp for the rest of the speakers as the mains are all you are really concerned with haveing plenty of current.
You can get yourself a pretty good Rotel combo for your budget amount. Lots of us have Rotel/Axiom set ups here. Very robust and clean power with a five year warrantee.
………just some thoughts to ponder.
