Q: here is the link to the nexxtech one: http://www.circuitcity.com/ssm/Nexxtech-Ultimate-HDMI-Cable-for-PS3-and-Xbox-360-8-ft/sem/rpsm/oid/213359/rpem/ccd/productDetail.do?cc_fm=Similar+Items+Mod and the official xbox 360 hdmi cable: http://www.circuitcity.com/ssm/Microsoft-HDMI-Cable-for-Xbox-360-882224239134/sem/rpsm/oid/190968/rpem/ccd/productDetail.do
A: A cheaper one will do fine, just as good. However the official cable has a optical port (for digital audio) built in to it. Now this may have no meaning to you, but if you do use optical you will need the official cable. You can mod your old AV cable to plug in with the HDMI (because they won't fit together otherwise) like this and have both a cheap HDMI cable and optical port http://www.chadledford.com/?p=50