My vote is for the g.skill.
Yea, the samsung is kind of good, and yes at stock its voltage is amazing. However, its also at cl11@1600 or 1333 stock. To get it up to a reasonable speed you have to add up voltage. Meaning you are going to be up to 1.5-1.6 to push it up into the realms of 2133-2400, and that is at cl11. After that, your timing might be all wacked out at something like 11-14-12-36-2t at 1.6v to be running at 2133 or 2400mhz. All of that considered, before you even factor in that it is a complete lottery as to whether or not it is actually going to do those speeds.
However, with the g.skill, you know that it is already set to go at 2133 cl9 at 1.65v. You could leave it stock, and have out of the box better/lower timings plus the stability of ram that has already been binned to run at a high speed with tight timings.I noticed that you fold, I'm pretty into folding myself. So I assume that you intend to fold on this computer.
Looked at the wrong person.
This is where your timing and speeds are really going to make a difference. I was running cl9 1600mhz xms3 ram 4x2gb, with timings at 9-9-9-24-1t. I was netting around 104k ppd on 6901's and around 110kppd for 6903 wu's. When I switched to a 4x4gb 1866 9-10-9-24-21t cl9 kit from g.skill (see sig) I got an immediate jump in ppd to around 115kppd on 6901's and up to the 135-140k ppd on 6903wu's. BUT
there was less than a 2k difference in ppd going from the 1866 cl9 to 2133 cl10 with timings of 10-11-11-28-2t.
However, the g.skill ram you linked in op is timed better than my ram o.c'd at its stock speed.
Just saying, if you are going to fold on this computer, stability, promised performance, and binned/paired dimms are going to be a much better bet.
B.T.W. - there are screen shots somewhere in the dark predators thread showing the p.p.d. difference that I mentioned, I am just too lazy to look for them a.t.m. The allocated memory allowed for the vmbox instance was not changed between ram sets, so it held no relevance as to the p.p.d produced. And the testing was done on a 3930k @ 4.8 vt-d enabled for all of the testing.
edit: well, after looking back at the o.p. I realize you are not folding, so I suppose you could use this information as you choose, as it may or may not be relevent to your usage.