I'd recommend the newer Asus Sabertooth over both
Both do PCI-E 2.0 @ 2x16
Sabertooth has newer Realtek ALC892 chipset
Sabertooth has 2 extra USB ports
Sabertooth has e-SATA poertsd
Sabertooth has Premium ceramic-coating technology
Sabertooth has 5 year warranty (2 more than P6X58D-E)
Sabertooth is $35 cheaper
Sabertooth is extremely overclockable board with some reviewers reporting highest / easiest OC';s in their experience.
Sabertooth has optical SPDIF port, if ya need the older coaxial, then the Sabertooth doesn't have that optionhttp://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007627%2050001315%20600007887&IsNodeId=1&bop=And&CompareItemList=280|13-131-641
With regard to other parts...
That RAM is very tall and will likely interfere w/many aftermarket CPU coolers. These Corsairs are cheaper at same spec (CAS 9) $84http://www.newegg.com/Product/Product.aspx?Item=N82E16820145222
These CAS 7's are only $5 morehttp://www.newegg.com/Product/Product.aspx?Item=N82E16820227640
These SSD's are faster, same price and the Intel's are out of stock @ newegghttp://www.newegg.com/Product/Product.aspx?Item=N82E16820227590