As a fan of South Philly hoagies—the kind piled high with sharp provolone, roasted long-hots and piles of thinly shaved, imported Italian sopresetta and mortadella—I'm always cautious when I see the word "sub." But the glimmering retro neon signs outside the White House Sub Shop in Atlantic City, New Jersey, drew me in, and their Italian Sub is an awesome change of pace. More