If you don't plan on using DDR3 in the near future, then do not consider the Gigabyte GA-P35C-DS3R.
Consider the GA-P35-DS3R, or the GA-P35-DS3P, or the GA-P35-DQ6.
As for which board to get, it is a choice of price and features.
I choose the GA-P35-DS3R as I didn't require WiFi, Dual...