It all depends on what type of riding you hope to do. For casual short rides, cages are probably the smart choice. However, clipless pedals are the only way to go if you want to cover longer distances (20-50+ miles) because of the added efficiency (and to a lesser degree- comfort, and weight advantage). The only notable disadvantage to clipless is that you'll need to pack a normal pair of shoes to get around if you plan on stopping anywhere and spending time off your bike before returning to your place of departure. It can take some getting used to but if you want to get around quickly and cover decent distances in comfort you'll probably be much happier in clipless pedals.