Tacx Vortex Smart
The draw: Real road feel
The weight of the flywheel is often one of the biggest drivers of how realistic a trainer feels. In the case of the Vortex Smart, it has a flywheel weight of nearly double some of the others, giving it a bit of an edge there. On the downside, it has more limited incline simulation at 7 percent. Tacx does, however, calculate your cycling cadence—one of the only trainer companies to do so—and broadcasts it over ANT+ and Bluetooth Smart. This means that you can skip buying another sensor for your bike, saving a bit of money.
– Indoor trainer reviews by Ray Maker