@rrbronstein
I agree that for the most part, there's nothing wrong with the first revision. however, some of us are extremely picky. personally I am a perfectionist, and if there's the SLIGHTEST error with my computer, I would be unhappy about it. hell, if I bought a 1st revision Haswell board, I may end up being unhappy enough to buy a C2 board later down the line (personal OCD issues)... then again I'm sitting on OCed Sandy Bridge and have seen no reason to upgrade yet...
that aside, many of us here are enthusiasts and can push our systems a bit further than gaming applications, and the 2nd revision are oftentimes better, or at least smoother, for overclocking than 1st revisions if you just want to squeeze out that last MHz to show off to your buddies. I agree that if you need to build a machine now, go ahead, but if it isn't your first build, and you're not sitting on an ancient Celeron or something, a month or two of extra waiting just to get that perfect machine really isn't a big deal.