Chad, get the Parasound. I have the HCA-2200 (2 channels @220 watts) and a HCA-2003A (3 channels@220 watts) and they sound awesome. On Monday I move into a brand new home with a 18'x27' game room, which will become the theater/music room and these amps will fill the bill nicely.
I bought these amps used on Ebay and they are very nicely built and very heavy (60+ lbs). I think the 855 will be an excellent performer. Good Luck.