Definetly not the best nforce4 ultra.
Question is what are you planning on doing with this system? O/cing?
If you plan on O/C'ing the DFI Nforce 4 Ultra boards will be available within the next month and should probably be the best O/cing mb out for the time being(Not knowing what the future holds) They seem to be running around 150 USD. Another great choice would be the MSI Neo4 Platinum, but I think it's price is a little more around 175 USD or so and afaik it isn't available probably for another 3 weeks to a month.
If you don't plan on O/cing then the chaintech will do just fine, or the gigabyte. These are two of the lower priced solutions.