Hey M,
Nice Post.
IMHO(somewhat worthless), I would get a:
Gigabyte 7VRXP ($110)
Epox 8K3A+ ($108)
Shuttle AK35GT2 ($79)
all with on board RAID using the Via KT333 chipset.
Thinking outside the "Via" Box, I would get a:
Abit NV7-133R($113) or
MSI K7N415 PRO($100)
Both using the nVidia nForce 415 chipset(no on-board video)
The nForce while not being able to kick the Via KT266A or KT333 chipsets butt, stays very close.
I would not go with the Iwill XP333-R. It can be over-clocked very high, but does not perform well from the bench marks that I have seen. I would only get this mobo if you worked for Acer Labs. It is a good mobo, but there are better choices.
Lastly, something to think about...........the current Athlon's cannot really take advantage of the higher bandwith of the PC2700 DDR. If you look at the bench marks, the difference between the KT266A & KT333(running PC2700 DDR), most show less than a 7% gain. The new T-Breds may change this, but the Memory performance gain in the Athlon based systems is very little going to PC2700 vs. PC2100. In the Intel P4's this is a much different story, but why would you want to spend that kind of money. The only reason you would spend the $20 or so more to get the KT333 vs. the KT266A chipset mobo, is they are easier to setup to run over clocked.
Good Luck with your choice & system. And remember, you can only make the best choice based on the info that you have at the time that you purchase. You will get more info after you purchase it, so don't sweat it. There is no such thing as a perfect mobo or anything really. So try to make the best of the choices you make & be happy.
Peace Out.............tile
It would be nice if everyone gave too much information about their system & problems.