My old treadmill took a shit so I spent about a week checking some out and then lots of internet research. My budget was $2k. Commercial units are, IMO, ridiculously overpriced for the premium over nice residential units so I settled on a Sole F85. Not a ton of bells and whistles......just a solid unit with great reviews and high marks for customer service. It is crazy quiet even at higher speeds. The deck is comfortable and spacious. Running on it is quite comfortable and "easy".....I now realize what a piece of shit my old treadmill was. Fuck running outside. Thanks for your interest.