Hi I have a ps3 and a (HDTV 1080I) to connect the ps3 to the hd tv witch one of these is better and what?

A HDMI cable is the best option, however, there is no need to buy a gold cable or any other gimmick, just a normal, cheap HDMI cable will do the job just as well as any other cable. Make sure it is long enough though, I recommend about 2 meters.