HDMI cables have got to be the biggest scam game out there. People charge TONS of money for them (
Linky) and it is NOT worth it.
Some people go the way cheap route, some people go the way expensive route. Honestly the data being sent over these cables is all 1's and 0's so what you are usually paying for is the jacket and fancy brand name, not the actual cable.
What you want to be sure of is getting an HDMI 1.3 cable (thats the latest "standard" of HDMI). Do NOT be fooled by all this junk about the high end HDMI cables. Its not true. But be weary of the ultra-cheap HDMI cables as well. Like anything sometimes they are not made with the highest of quality, and have a higher failure rate. I usually go middle of the road, and have NEVER had any issues.
Another important thing to remember is that right now there are very very few things in actual 1080p. Your blu-ray player is 1080p, Your PS3 is 1080p, your ESPN, ABC, FOX all broadcast in 720p, the others in 1080i. The Display technology is out in front of the Bandwidth issues that are arising with 1080p. Cable companies and Sat Companies simply cannot cram this much data down their pipes right now. Although they are working on it I dont expect to have everything in 1080p anytime soon.
Lemme know if you have any other questions.