The MB I just bought is a p5n32 e sli (not plus). I read a product review that said the 650 mb's were *******ized versions of the 680 to make them a little cheaper.
As for Asus. . . This is the second Asus board I've had. The first was an A8N32sli deluxe. I have to say it's been a love hate thing with Asus boards for me. The boards themselves seem to work fine but the asus website is crap, pcprobe is crap, the manuals are crap and the bios updater is crap. The website is blah, the manuals are next to useless when it comes to bios settings, pcprobe is always off on it's temps and I have to reset the mb warning threshold and fans speeds everytime I start the program. And nothing short of praying over the bios updater and using the jedi mind trick on it will make that program work.
Forgive me for putting on my digi-jihad hat and hijacking your thread. (Tis a joke. I'm athiest, don't call the FBI. lol)