I'm pretty much set on all my upgrades except for my motherboard. My CPU is either going to be the AMD Athlon II X2 240 or the AMD Phenom II X2 550, so I need one with an AM3 slot. I will not be overclocking and I would like to have one for no more than $60-$70. I don't know how to choose between motherboards so can you guys please help me? Thanks in advance.