Here is the list of receivers that fits your budget & has lots of discussion on the forum, which should help you narrow down to the right choice..
Onkyo TX-SR805, Denon AVR-2808CI, Yamaha RX-V1800, Pioneer Elite VSX-92TXH
As far as speakers, since you already have the Mythos Ones, why don't you go w/ Def Tech for the rest of the setup? (except for the subwoofer, you can do better w/ same budget)
For subwoofer, it all depend on your room size and your budget...
Onkyo TX-SR805, Denon AVR-2808CI, Yamaha RX-V1800, Pioneer Elite VSX-92TXH
As far as speakers, since you already have the Mythos Ones, why don't you go w/ Def Tech for the rest of the setup? (except for the subwoofer, you can do better w/ same budget)
For subwoofer, it all depend on your room size and your budget...