Well, but the P4P800 is an Intel mobo, and he wants AMD to get away with less costs... I think the MSI is fine, but if you want to have a broader overview of several nForce2 MoBos, you can try this link:
http://www.anandtech.com/mb/showdoc.html?i=1759
In the long run, I think you can neglect performance differences (which are bound to be tiny among boards with the same chipset) and decide according to which board offers everything you want and no features you won't ever use (like Asus', Chaintech's and Gigabyte's top-of-the-line MoBos), plus good reliability, customer service and warranty. Just my § 0.02...
Oh, and I'm not sure if the perfomance gain from 256 MB gfx memory instead of 128 is in any reasonable relation to the price difference... I would check that if I were you.