When I set up my HT about a year ago, I bought four Audioquest HDMI-X cables at $100 each. Later I bought by mom/dad a TV for Christmas and bought HDMI cables from Monoprice.com after reading about them over at AVS. Out of curiousity, I swapped out the Audioquest cables in my system with the Monoprice cables and honestly couldn't tell a difference. I'm a believer that audio cables make a difference (to a point) in a quality two channel setup, but for video I would suggest that you try the Monoprice cables before you sink a wad into high priced HDMI cables. At least they would give you a point of reference if you decide to experiment. Just my two cents.
http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10240&cs_id=1024008&p_id=3992&seq=1&format=2
http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10240&cs_id=1024008&p_id=3992&seq=1&format=2