Van Rysel D100 Home Trainer

If quiet matters most and you never sprint hard, start here. In one review it averaged around 58 dB at 150 watts, the quietest trainer that reviewer had tested, and peaked near 68 dB at 600 watts. That 600-watt cap, together with a 6 percent gradient limit, is the catch: stronger riders and anyone who races will hit the ceiling. Bought with a Zwift Cog and Click, it is fully compatible with Zwift only in that setup, and its cadence readings were unreliable in testing, so pair a separate sensor if cadence matters. Decathlon sells it across Europe and the UK and has listed the Cog and Click version in the US at $299, but US stock comes and goes, so check availability before planning around it.