it IS A joke to read the reviews on this machine C2150. They are all bais in one reason or another and people actually listen to their garbage! If you have ever owned a Nordic Track you know they are good and so is mine! Unless you are an avid fast runner, then this machine might not be for you, but like everything else the motor size will tell you that! So when you are shopping and reading reviews remember to do your homework and look to see if a SALES Person is putting up a negative on a certain machine and that tells that story!! this machine is a good one!!