I believe it's not all 169.xx drivers that are affected by the AA bug. IIRC 169.02 / 169.04 work fine.
There's not much doubt in my mind Nvidia AA is inferior to ATI's. And some of us have noticed for a while the general jaggedness of the wires/stays in SH4:
http://www.subsim.com/radioroom/show...hlight=quality
Thanks for the tip about AA Compatibility, Rubini, I'm going to give it shot tonight!