After reading quite a few reviews I was under the impression that this was a very sturdy treadmill. It has a much higher weight tolerance than most home models in this price range and a heavy duty deck. Unfortunately when I set it up at home and began running on it, I found that it's not quite a sturdy as it claimed. There is still a definite unsteady feel and it does shake. While walking it's great, the fan is a nice option but if you're a frequent runner, I would opt for something more substantial.
Buy Horizon Fitness T91 Treadmill!