 Racing to the lowest price, McDonald's may be the largest fast food chain by sales volume, but its competition tougher than day-old fry. Last month, shortly after Bloomberg reported the chain's intentions to bring out the deal, Burger King debuted its own $5 meal, Wendy's dropped a $3 meal, and Starbucks jumped in with a $5 coffee and pastry combo. Pete, the new $5 deal from McDonald's, an old-school $5 footlong or 5 for 5 from Arby's circa 1994. What is the go-to?