I am usually pretty biased towards Onkyo (thats the brand I have had the most experience with). All of this year's line up are great (TXSR603X, 703, 803) for both movies and music. You might be better off to go with the 703 (unless you can find a steal on last years 702 - they retail at the same price). The 703, and 803 are both THX cerified with the biggest difference between them being HDMI switching on the 803. All are XM ready - just plug the antenna in and away you go ( you do have to subscribe).

Either way, they are both great brands and you won't go wrong with either one - but my money is on the Onkyo.