I say grab 1333 and call it a day. 1600 isn't much more expensive than 1333 though. 2200 is just a waste of money.
Also, one thing I noticed on the Anand review that was not on here (that I ran into anyway, just skimmed through) is that Anand also ran a set of cl6 with the others.
One thing that I found that would matter to most gamers here is that in some games where there was an overall low FPS (well, low to me as in under 30), lower timings like cl6 and cl7 had an overall higher minimum FPS than cl9 or higher.
At the same time the higher frequency RAM sometimes had an overall higher FPS, but it comes down to what will we notice more, and I would say you would benefit more from a 2-4 FPS increase when you are getting 25 FPS than the same increase if you had over 100.
This is one thing to keep in mind when choosing RAM. Though if you have a good GFX card, then this point could be moot except for the maybe 1-3 games remaining that can give high end cards a hard time.