Onkyo TX-SR605 ($400)
Yamaha RX-V661 ($500)
Sony STR-DG910 ($330)
These are very good entry level receivers that will provide 1080p/Lossless Audio...
if you have or plan on getting an HDTV with hdmi 1.3 then you should look at the Onkyo...if not, than any of these will be great for your set-up.