Barring the complete outlawing of fizzy drinks, the Coke vs. Pepsi fight will continue to be the main event in pop pugilism. But what about the albino step-siblings of these cola titans — the lemon-lime drinks? These lesser libations — Sprite, Sierra Mist, 7Up — have seen their ad budgets butchered and their sales sink in recent years. But none of them are willing to go down for the count without at least one last left hook. [More]