In n out. Five guys sucks "If you tally up the results of the individual components, In-N-Out takes it with three and a half victories against Shake Shack's two and Five Guys's half. That said, numbers aren't everything, and the Shack's dominance in the meat department should clearly be weighted more heavily than the other categories" http://aht.seriouseats.com/archives/2011/05/in-n-out-vs-five-guys-vs-shake-shack-the-first-bi-coastal-side-by-side-taste-test.html