Obviously, some are better than others. Caldarone -- who claims to have tried almost every possible ingredient permutation -- says the best combination is corn tortilla steak tacos with peppers and onions, hot salsa, sour cream, cheese, and lettuce.
The best authorized off-menu (more on that below) item is the quesarito -- a cooked quesadilla that is reopened and made into burrito. "Try it with guacamole, rice, pinto beans, half steak-half carnitas, corn salsa, hot salsa, sour cream, and cheese," suggests Caldarone.
The worst combination he ever tried: the salsas and sour cream mixed together in a cup. "Those will go right through you."
But hey, at least he knows.