From mountain biking up some of the world's deadliest mountains to commuting to work safely, racing on an efficient road bike and exploring technical terrain on a hybrid, there are so many bikes to choose from. But which ones are worthy of your money? The most important factor when it comes down to choosing the perfect bike for you is what you are going to use it for. “While it is not an exact science, generally one should be realistic about what sort of riding they intend to do and get a bicycle that is designed for that type of adventure, and make sure it is comfortable for them,” Forrest Cutrer from Danny's Cycles Upper West Side says. The following list is based on several reviews of experts from major and smaller bike shops in the country who have years of experience in repairing and selling bikes.