Below is an outline of a build I am considering going ahead with in a few weeks. However I am still in need of a case. I have been leaning towards the Corsair 600T because I wish to have a mid sized tower with a large interior to fit everything nicely, however the 600T is quite aesthetically boring..
I'm not an expert on the subject, but I think that overclocked RAM is faster, but at the expense of a shorter life. This RAM is designed for this though, so I hope it would at least be able to handle its own factory overclock.
You really don't need overclocked RAM, though. 1600MHz is perfectly fine, and in real life use, you probably won't even notice a difference.
Personally, I always do, and always will, buy Crucial RAM.