i have those. Got them a while back.
680i isn't bad for Intel. Quite good actually, better than any other nVidia chipset that has been made for Intel. It just has too many minor problems that i would hate to deal with. And nvidia drivers are known to be slow at coming out.
haha... i hate to laugh at you lhuser knowing you're a mod and all (begs and pleads for life on forums ) but SiS has been out of the "loop" for a while for high end chipsets. They are making lower end chipsets now for the OEM computers and such.