The big moves in Green Mountain (GMCR -48%) and Chesapeake Energy (CHK +1.91%) recently have value investors chomping at the bit to scoop up shares at deep discounts. To do so however, is akin to trying to catch a falling knife. "You have to distinguish between just setbacks and atrophy of business model,” says Short Hill Capital's Stephen Weiss. If you don't, you might just find yourself getting impaled by tempation. Some safer bets might be: Starbucks (SBUX -2%), Visa (V -4.6%), or McDonald's (MCD -0.6%).