Im building my new computer and i have to decide between X58B-A or a DX58SO, I know the DX is better but what are the main differences? My new pc will have: Radeon HD 5870 1GB Video card i7 930 2.88ghz 8GB Ram 500gb harddrive Windows 7 Home Premium 64 bit With those specs, which one do you recommend and why? The price difference between them is 0-120 bucks where i live. Thanks for you help