BOSTON ( MainStreet) -- Typically, consumer and retail loyalty goes to the best products. As the cliche goes: Build a better mousetrap and the world will beat a path to your door.Sometimes, however, the best just isn't good enough. Quality is often subjective. Consider stereo equipment: An audiophile may speak glowingly of midrange tones, while the typical consumer really only cares about pumping bass, a cool label or a pretty display. A critically acclaimed movie can be a dud at the box office and more people buy Big Macs each day than filet mignon. Quality isn't the only predictor of success. The following are examples of products that -- both subjectively and objectively -- were hailed as the top of their class, but nevertheless failed.