Keiser M3i Indoor Bike

A commercial-grade spin bike for households that want one machine to last for years and ask nothing more after the purchase. Its magnetic resistance is smooth and quiet, the seat and handlebars each adjust four ways, and Keiser lists a rider range from 4 ft 10 in to 7 ft and up to 350 lb, so very different heights can share it. The console is simple, showing cadence, power, heart rate and gear, and Bluetooth lets it pair with apps on your own tablet. There is no screen, no auto-resistance and no subscription. The price is the hurdle: Keiser lists it at $3,250, more than the Peloton Cross Training Bike+, though Peloton's membership closes that gap within the first year.