The credvita treadmill is great - very sturdy, great features. The assembly was fine - if you are used to assembling Ikea-type stuff you'll be fine, instructions are clear. The length and width of the track are perfect. My husband runs on it, I walk. The controls are easy to use. It is quite heavy so if you need to get it into a basement for example, it will definitely take 2 people, but we managed fine. A very good purchase.