i just ordered a system.. i got the s939 3500+ asus AV8 mobo, and that antec 1080 case.. i was lookin at the s754 stuff and i found out from a buncha ppl that amd is goin towards s939 as they're new main line for cpus.. its all depending on what you wanna do..
antec 1080 case
http://www.newegg.com/app/ViewProduc...129-115&depa=0
amd64 3500+
http://www.newegg.com/app/viewproduc...103-463&DEPA=1
asus av8
http://www.newegg.com/app/viewProduc...131-510&depa=1
case 114
mobo 129
cpu 341
total 584
so it all depends if you wanna spend that extra ~100. i just thought that id go that way cuz if need be i could go and get a higher 939 chip later on, instead of going s754 and having to upgrade my board and cpu later on since the s754's are stoping at the 3700+ from what i've read.