If this one flips your lid spring the extra $100 for the Maxx Crosswalk 650. This one has quite a bit of bang for the buck for $500 but you really should set your expectations low when you spend $500 on a treadmill. The factory simply cannot put enough money into the machine to make it hold up.
This is a decent tread but you are better off if you spend more and get a better quality unit. If you don't listen, please bookmark our site and we will be happy to sell you parts in the future.