Which of these three is the better bang for the buck?




I would probably be getting a 5.1 set-up but would like the ability to upgrade or add in the future. I don't think the dual sub feature is a must so a 7.1 will suffice. But I would like to put all my accessories (PS3, XBox, etc) through it. I don't fully know the benefits of HDMI pass-through and HDMI conversion. I would like to stay in the $400-$600 range for the receiver. Speakers will come later

If you like a better receiver please post it up and why it would be better than these three.