My choice would be the G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) for $61 as they are CL10 modules. Mushkin is supposed to be a top tier brand along with Corsair and Crucial, but I've never had any experience with them so I can't testify, so an alternate choice could be the Mushkin Enhanced Blackline 16GB (2 x 8GB) 240-Pin DDR3 UDIMM DDR3 2133 (PC3 17000) for $56, but they are CL11 (honestly you'll never notice the difference between CL10 and CL11 except in RAM benchmarks). I use the 2x4GB version of the Ripjaws X series and have no complaints. Thing is, after Socket AM4 is launched, DDR3 is dead, so I'd save the $5 and go with the Mushkin modules.
Thanks for the reply man. Things get a bit clearer now.
Good pointers on the AM4 socket as well.