ECU - you can go to AmdForums.com for a large board with lengthy threads on AMD motherboards (a seperate forum for each manufacturer).
One thing to keep in mind when perusing such forums - on the one hand a significant percentage of the people that post to them have problems. On the other hand they usually make up a small percentage of the total number of owners of a particular m/b. This can result in a very skewed view on how good/bad a m/b is.
At this point in time I would agree with Brad on the KR7A-Raid. A semi-thumbs up on the Epox 8k3A (there do appear to be a few gotchas). The 3rd I would suggest looking at is the ASUS A7V333-Raid.
As far as the AT7 *puke*
