- Ratings for treadmills are a combination of opinions of some fitness professionals and of the typical exercisers just like you. they are combined to help you in evaluating a treadmill in terms both of the quality of components and how well it actually fits into the average exerciser’s fitness regime. those who have done their research have discovered that Smooth treadmills are the choice of the treadmill reviews. smooth treadmills have been, rated regularly as one of the top treadmills that are out there in their respective classes – mid-range, budget, and expensive.