Love Taco Salad so that might win. I usually do Cosmic Ray's for a filling lunch but will try Pecos this time.
I like to make LUNCH the most filling on my Magic Kingdom day and as a value finder I liked Ray's fixing's for filing out the meal a bit.
I eat a hearty lunch, then go watch Tiki, Philharmonic, or a couple other such sit-down shows while I digest, then I can wait longer and have a light dinner. Lunch is the most affordable meal to fill up on ;-)