I bought the 101 for $99 with free shipping, and I’m glad I got it. I like it because I don’t run the same routes very often. We have asphalt bike paths all around the part of town I run in. I run on these paths almost exclusively, but I often change the route on a whim. The Forerunner helps me track my mileage and pace. I also use it for repeats because I don’t run on a track.