Expensive HDMI cables... worth it?

JUst bought a 32 inch LED 100hz, 24fp, bla blah TV :P but now i need a hdmi cable to connect my ps3 upto it to play blu rays on it. I already have a cheapy HDMI from ebay (cost about �5) is it worth buying a proper �30 HDMI cable? Will you notice Any diff at all? or is it all a bit of a scam. Pease only message if you know the anwser -_- I posted this on another forum and all i got back were people posting "GET THE CHEAP ONE CHEAP IS ALLWAYS BETTER" etc -_- thanks.