If you want to save the money for something else then I recommend to buy the 2X 4GB 1333MHz cl8 1.5V RAM kit, because i3 does support 1600MHz and 1333Mhz RAM, but for intel system there is not big difference in performance between those RAM speed. And I don't recommend to buy the 2X2GB kit, because you will waste more money when you upgrade the RAM.
Yes, I want to save for a monitor and a power supply, if the difference is not a big deal between 1600 and 1333 then I will follow your advice.
So I should take the g.skill ares better with the 1333 MHz?
There is too much hardware to choose, and that makes me wonder...