I think the author hit his mark for the intent of the build/article based on the budget limit and provides a good starting point for us. However, if I was actually building and buying for myself, I would make some changes to add headroom and compatibility.
I would go with 16 GB of memory for $85 more, since that’s only $85/$1600=5% more cost. I’d also go ahead and get the Asus 780 for $520. (Side note: I disagree that most would go AMD in a 780 vs 290x, but I know better than to open that can of worms). SLI was mentioned but not used, and I also would not get SLI unless I KNEW it worked with the game I was most interested in. The posts on various forums about SLI causing problems in most games, along with SLI “issues” dating back to 3dFX Voodoo2 cards, keeps me away from SLI.
I also would stay away from “generally stable, but usually not stable in the games I want to play most” (not quoting the author here) overclocking of the system/video card. It’s nice to see it in the charts, but I read about way too many problems in games caused by overclocking for me to rely on it to get my ‘value’.
Lastly, I think the pendulum has swung too far towards “value” for the high end build. I suggest tweaking that a little for future high end builds (eg..780Ti, 16 GB memory, 500GB SSD, but continue to stay away from $1000 CPU, $1200 SLI, etc).