How important is the flywheel weight and resistance type?

Most picks here use magnetic resistance, which reviewers consistently praise for quiet, low-maintenance operation. Heavier flywheels generally produce a smoother pedal stroke, while friction/brake-pad systems (used on some YOSUDA and Merach cycling bikes) can feel more like a road bike but may need pad replacement over time. For apartment use, magnetic + belt drive is the most commonly recommended combination for low noise.