Sole tends to place more focus on biomechanics and the structure and function of their ellipticals instead of on integrated technology like touchscreens. It's also worth noting that none of the Sole ellipticals are foldable. Sole has a 30-day return policy but has longer warranties for the frame, parts, and service. Sales prices are often comparable to NordicTrack ellipticals.Sole might be the better option if you're looking for a long lasting, high quality elliptical and aren't as concerned about space-saving or special features.