Quick service restaurants continue to play catch-up with leaders Chipotle (NYSE:CMG) and Panera...

Quick service restaurants continue to play catch-up with leaders Chipotle (NYSE:CMG) and Panera Bread (NASDAQ:PNRA) as they try to subtly shift from "fast food" to "fast casual" and steal customers from sit-down alternatives. After McDonald's (NYSE:MCD) set the bar high with premium coffee, smoothies, and reworked restaurants with HD TVs - nearly every chain has set in motion a modernization plan of its own.