Yep been reading a lot of good reports about geil, when i upgrade to vista 64 ill probably go with the ocz or perhaps geil, albeit pc 6400 2x2gb as i dont intend to oc my q6600 above 3.6ghz.Geil ram has been getting some v.good press round here recently too
Personally id change the msi p45 motherboard to an asus version. something like this.So change the CPU to the E8400, Ram to the more standerd 4gb model and CPU cooler to the tunic tower 120. All done

) Definitely go for GeIL Black Dragon, it is far cheaper. OCZ isn't as good at all. Yeah, the customer service might be pretty good, but the modules themselves are sub-par compared to the competition. Change the soundcard to an Asus Xonar DX. It is going to sound just as good, and you won't need the extra features of more expensive soundcards unless you have ultra special requirements. Finally, TX750 power supply. Then you will be all set and ready to go.