If you plan to age a bottle for a decade or longer, a cork aids the aging process, because it allows the most minute amount of air to pass through. But if you plan to drink that new bottle of wine within the next five years, go screw cap. A cork guarantees a 1-in-12 chance of your wine being "corked," or contaminated with TCA, which will make it smell off. A cap ensures no TCA, and you don't need a gizmo to open it. That said, many of the world's greatest wineries have not made the transition to screw cap yet. The main reason? Concern that their wine will be perceived as cheap.

-- J. Yadegaran, Staff