help picking a mothebroard

[bluemaverick]

I will be looking for another system for my GF.

1st. gaming perfomance
2nd. ease of overcloking

I will be picking between the 4 board below:

ABIT MB AN8
NF4 AMD S939 2000MHZ H.TRANSPORT DDR ATX PCIE16 AUD GBLAN RAID 1394

ABIT MB KN8 ULTRA
NF4 ULTRA S939 DUAL DDR PCIEX16 GBLAN SATA II RAID ATX

ASUS A8N-E
nForce4 Ultra Socket939 4DDR Aud+GbE PCI-Ex16+PCI-Ex3+PCIx3 ATX SATA

MSI MB K8N SLI-F
Nvidia NF4SLI Socket939 FSB1000MHz 4DDR400 2PCI-E16 PCI-E1 3PCI

Thank you for any input