I have had this Nordictrack Commercial 2450 Treadmill for about six months now. I am not quite sure of its exact age because I purchased this used. A gym was closing it's doors and selling off all of its equipment for pretty cheap. I have to say that this was the deal of a lifetime. I could never find another commercial grade treadmill for the price that I got it at! Anyway, as for the treadmill, it works great. The controls are easy to use and I do not get any malfunctioning. It has all the features that you would expect and a treadmill. It has a timer, measures your distance, you may change your speed as well as the incline position. Because it is a commercial grade treadmill, this NordicTrack treadmill does take up slightly more space than a regular one that you would purchase in a sporting good store or a place like Sears. It seems to have an excellent amount of power. This is not a cheaply made machine and it seems like it will last me for a very long time. I am not a huge fan of indoor exercise equipment, as I prefer to be outside, but for the price I couldn't beat it. This way I still get my walks and even if it's too cold outside for my children.