I have done both and liked them both. We have done Chef Mickey's for Breakfast and Lunch many times and 1900 Park Faire for dinner 2x and Crystal Palace for breakfast 2x. We have had other meals that are long gone now.
It pretty much will depend on your schedule and what you want. For example, we do Chef Mickey's every trip. We are doing it for dinner this year on our first night since that is a non-park day. Also, DD has gone princess crazy and we are doing the Norway breakfast and hopfully CRT for breakfast. This way we threw a dinner in there.
You should look at the menus and see if the food appeals to you. That's probably the best way to decide. When my parents come with us, my dad is a big breakfast eater, so we do Chef Mickey's for breakfast ( that was the case last year). I try to make everyone happy. I think the character interaction is pretty much the same.