Well it seems I'm late to this party as you've already ordered and it's already shipped. However I will say that I have no problems what-so-ever dropping 10 bucks on a 6 foot HDMI cable and sleeping like a baby. I don't personally think there are any differences in short run HDMI cables, so why spend more on them? However, for longer runs, and expecially for permanent installs like the one you're doing, I would probably have opted to spend the extra cash for piece of mind if nothing else. I probably would loose a lot of sleep once I came to the point of no return and they bolted up the ceiling and my decision was then unchangeable. For this reason I would spend the cash to make sure it's right.
But that's just me.
