. . for some time because of a couple of Slot-A boards that just didn't work right. I've been using their boards lately with no problems - except the Debian/LSI SCSI RAID problem but that isn't their fault. They seem to be pretty solid boards and perform well.
On the Debian/LSI SCSI RAID problem, ASUS had an alternate board with the nVidia chipset and that worked just fine. The problem is simply with VIA chipsets that support SATA.
Since about 80% of the machines I've built have VIA chipsets and since about 90% of the machines I've built have no serious problems from cradle to grave, I can't say VIA chipsets are bad. I have, however, encountered particular motherboards that were the pits regardless of chipset.