I would say that the daily 16 hr fast would probably be more convenient. I have been practicing the warrior diet lifestyle since August, which means that I have done undereating during the day and then eat one big meal at night.
It is actually pretty convenient not to eat anything during the day as you have much more time and energy to get things done! Because I love food too much however, I can't even imagine going a whole day without eating anything. One of my favorite parts of the day is dinner time!