Hi all- I'm looking to purchase a receiver to power 5 Sonance VP65R speakers and a Polk 505 Sub. I have a 60" Vizio LED tv as well. I also have an HTPC (running XBMC) with a number of my movies in varying quality levels. I was looking at refurb amps on accessories4less was originally thinking the 471 would suit my needs. I then noticed that the 571 provides 1080p upscaling. I'm wondering if this will help provide better quality for movies that I have on my HTPC in SD format. I also have another question. My XBOX only has component output. Will this receiver take component input and send it to the TV over the HDMI output?