I strongly prefer the nForce 3 chipset to the Via K8T800 chipset. I've used two boards of each kind (Asus A8V & Abit AV8 for the Via, MSI K8N Neo 2 & Gigabyte GA-K8NS for the nForce 3), and the nForce 3 boards were more stable. I particularly did not care for the Abit board (major stability issues), and my Asus board died on me for no apparent reason three months after I bought it.
Just my 2 cents. Good luck!