CycleOps Aluminum Roller with Resistance
Ride: Riding the CycleOps rollers feels almost identical to the Kreitler. Firmly planted, the metal rollers challenge your balance and vibrate more than the Tacx.
Resistance: The magnetic resistance unit can be used to increase the rider’s max power output. They make enough of a difference to do an intense interval session, assuming you can keep yourself upright while going anaerobic.
Usability: Moving the front drum on the CycleOps can be done by hand; the other two require tools—a benefit if you want to alternate bikes. It opens like the Kreitler but has a more complicated hinge.