The Cannondale Scalpel and Specialized Epic have been on the short list of the best cross-country bikes for over a decade. Both are built around proprietary suspension systems and both lay claim to the title of lightest and most efficient XC racing bike. Each one is a frequent flyer on World Cup and World Championship podiums and got full makeovers this year. Both take different approaches to the same problem, but which method is more effective, and for whom? Test Editor Bobby Lea stages a head to head battle to find out.