hi munoshi,
the two MSI boards you provided are really good. if you are not going to upgrade to SLI later on, then just get the MSI board without sli. if you are gonna upgrade to SLI on the other hand, then get the MSI board.
X2 are the dual core cpus for amd. they perform great and the x2 cpus are good for multitasking, gaming, and more.
check out
www.newegg.com for the good deals.