In our tests, NordicTrack has come out top of the list. Their commercial-grade treadmills for home use are superb and have real lasting power. Its sister brand, Proform, also makes good value treadmills that fall within the mid-range category.
If, however, you prefer a community feel when you’re working out, you should try something like the Peloton Tread. It’s a top-line machine, but the classes are truly motivating.