Hi,
I have this M/B, I do like it, the only thing is that my onboard sound has stuffed up so I need to buy a dedicated sound card (the front speaker output doesn't work anymore), but I did buy this board second hand.
In terms of overclocking, i have my 4300 at 3.0Ghz (333FSB, 1333 quad fsb).
Haven't used the SLI (puts both cards in x8 speed) so can't really comment on this feature.