I have a Denon AVR-3805 and love it, currently I'm driving a pair of Paradigm Monitor 11's and I have a Paradigm PW-2100 Sub. The 11's sound awesome with the 3805 driving them so I highly recommend both the speakers and the receiver, high volumes are crystal clear and clean with no sign of strain whatsoever. Having said that however there's definitely other good receivers out there in the same range, the Yamaha RXV2500 or RXV4600, Marantz SR8400 or SR8500, Pioneer VSX56TXi or VSX55TXi, and the Harmon Kardon AVR635 or AVR7300 and with regards to Speakers there's Axiom and many other excellent speakers.
Good Luck