I travel statewide on my job and am rarely in one place for long so I needed a trainer that could accomodate the road. I love that it has five courses and that I can pick my own levels as well. I have even found additional courses to add to it online. I can keep up with my heart rate and distance and calories too. I am so happy with this trainer.I especially like all the extra things I can do with it online and the fact that it travels well. The rechargeable batteries are a plus too and are used when on the computer. They are charged by pedaling which is way cool! The guys that travel with me on the crew have been equally impressed and several of the guys plan to purchase one too. If you need a portable gym, this one is a little expensive but it sure is great which is worth spending the money for.