Chad
My opinion on this would be to use the 800 number as the primary number and if their is a secondary number field, use the local number. Think about it, if you are a national company, like a United Airlines or a Coast to Coast moving company, would you rather see a 567-453-xxxx number or a 1-800-xxx-xxxx ? As Mike said, they are convenient and that's what you want to provide to the user. If not, what's the point of having those numbers in the first place ?
Again, I hope this helps.
