This proves absolutely nothing new, everyone already knew 1600 CAS 9 @ 1.50v is the LGA 1155 Sandy Bridge sweat-spot.
Here's a much more informative review since 'January' ->
http://www.bit-tech.net/hardware/memory/2011/01/11/the-best-memory-for-sandy-bridge/1
That Value-O-Meter is WAY-OFF via OMISSION! I do agree 8GB (2X4GB) is the best choice for Gaming.
Major Problems - in the Forum many of those 2x(2X4GB) {** 16GB setup} kits will not work at Rated Frequencies once combined with a second matching set of the same. Second problem, the Sandy Bridge is specifically designed for 1.50v RAM and not 1.60v or 1.65v kits. Longterm it places unnecessary stain on the CPU's IMC; therefore stick with 1.50v kits.
Best Bang for the buck:
$99 2x4GB G.SKILL F3-12800CL9D-8GBXL 1600 MHz 9-9-9-24-2T @ 1.50v **
$210 4x4GB CORSAIR Vengeance CMZ16GX3M4A1600C9B 1600 MHz 9-9-9-24-2T @ 1.50v