I've narrowed down my choices. Just state which one you like more and why. My price range is $40-70 for 2x2gb. I'm leaning towards the g skill PI. I know how to manually set to 4-4-4-12 timing on the g skill. But not sure if the lower timing is worth the extra $25-30 over the muskin and corsair. I play COD4 and getting Warhead soon.
G skill
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231209
Muskin
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146692
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146731
Corsair
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184
G skill
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231209
Muskin
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146692
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146731
Corsair
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184