Best oc BIOS for the BD7?

Wich BIOS is best for overclocking the BD7? I have noticed that the newest at abit´s webpage supports higher voltages, but i´d rather not prefer to raise the vcore..

Does anyone know a good link for good BIOSes??

bump
i'd like to know as well

I've tried some of the offical bios updates, as well as Mr Naturals

Well, how does Mr Naturals BIOS work?? And where can i find them??