At first I had problems with my PS3 and HDMI , I would randomly see snowy artifcats and sometimes the screen would black out for a split second , I thought it was my TV but after doing research I ended up buying a $10 hdmi cable from Monoprice.com and its been flawless ever since.
The cable that was giving me trouble at first was a freebie that came with my upconverting dvd player, It just looked cheap and the wire was about as thin as it gets.
Theres no way you would tell a differance between over priced monster cable and another good quality cable such as one from monoprice.