I have a Wahoo Kickr and bought it for my wife. Although Flux is quieter, it's not as accurate. It makes sense given the lower cost, but the Flux has a much worse powerband. I can leave my kicker in the same gear and crank the power up from 50 to very high. With Flux, my wife basically has to switch to grinders to get under 100W. Not a big fan of it.