What RAM will work with my motherboard?

Solution
You can run DDR3 1066 Mhz and 1333 Mhz. You didn't say what processor you were using, but if it is an Ivy Bridge, then you can run 1600Mhz. GSkill, Corsair, Crucial, Kingsto, & Mushkin are all good brands of Memory, I would stay away from PNY. Be sure to get your memory in matched pairs or a matched set of 4 sticks.
You can run DDR3 1066 Mhz and 1333 Mhz. You didn't say what processor you were using, but if it is an Ivy Bridge, then you can run 1600Mhz. GSkill, Corsair, Crucial, Kingsto, & Mushkin are all good brands of Memory, I would stay away from PNY. Be sure to get your memory in matched pairs or a matched set of 4 sticks.
 
Solution
pretty much any 1600mhz DDR3 DIMM will work in your motherboard (you could also use 1333 or 1066, but not much point. 1600mhz is just as cheap and will work @1333mhz if your CPU only supports 1333mhz).

RAM prices change on a daily basis, and even vary by kit in the same model#, so you have to specify what you want. (4gb, 8gb, 16gb? do you want 1 module or two?)

here's the 8gb 2x4 kit I would recommend today.
G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($49.99 @ Newegg)