I saw this info-graphic awhile ago and thought it would be good to repost it.  Basically, since HDMI is all digital, the signal is either going to get there or it’s not, so it doesn’t matter whether the cable costs $5 or $500. You’re better off going with the $5 one though…

If you’re looking for cheap cables, be sure to check out MonoPrice as well as DeepSurplus.  Both have some great deals on cables that cost much more elsewhere.