* In the reviews that i've seen, it appears that it does not contain four mounting holes around the cpu socket. Needed for some heatsinks.
* There seems to be more than one version of AU13 - different by feature set.
* As to the stability/quality of the board, i have no knowledge.
* I'd get the Abit NF7-S Revision 2.0 board if cost is not an issue and Epox 8RDA+ otherwise.