A couple of nights ago, the wife and I purchased a 42" Sony Bravia LCD TV at Best Buy (it was $999 on sale and usually $1399 so we went for it) and got it all hooked up. I have an Elite XBox 360, an upconverting Philips DVD player and a pretty nice Harmon Kardon receiver. My question is... What should I use to hook all these together to maximize my picture quality? I have high grade A/V components hookups but every one is telling me to get HDMI cords. Problem is I don't know which ones are worth the money and which ones are just duds. Any recommendations?