Three RAM modules - help me decide, please!

Mr_____

Honorable
Jul 19, 2012
76
0
10,640
I like all three of these, and need help deciding which one to get. My CPU is an i3 2120 (sandy bridge), and I haven't decided on a motherboard yet, but it will most likely be a Z77.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231546
Speed: 1600
CL: 9
1.5V
$44.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231477
Speed: 1600
CL: 9
1.35V
$48.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231440
Speed: 1333
CL: 7
1.5V
49.99

Overly-complicated technical answers are welcome :)
The difference in price between these doesn't matter much to me.