I have built Abit KT7: stability probs (random lockups & freezes)
I have built Abit KT7-Raid: stability problems (random lockups, freezes, & data corruption)
I have built Asus A7V: Stable at first, became unstable afetr 3 months with no overclocking (data corruption and multiple delays/freezes)
I have bulit upwards of 25 boxes thus far so I feel like I know what I doing. I did my research, added all of the right drivers and fixes and still no dice.
Don't get me wrong, these boards can be set stable if you have the patience and experience and are not psuhing them balls-to-the-wall style.
However, with this being your first build, you should be concerned with simplicity & STABILITY. You have no choice then but an MSI K7T Pro or MSI K7T Pro2 or MSI K7T Pro2-A. Hell, even Anand runs for of his servers off of the MSI K7T Pro2 motherbaords (see his review). The performance of the Pro2 and Pro2-A is almost equal that of Abit and Asus (SMALL % diff), but you are getting unparalled stability in exchange. FWIW: I am building my next, personal box off of the MSI K7T Pro2-A which I just orederd this afternoon from OpenLinx.
HTH