I've done time on a traditional electromagnetic roller job. I hated it so much I sold it. However I'm now thinking I might re-want one, for very short workouts which should be more bearable.
What's a better option? Rollers don't have enough resistance for some of what I want to do. I did once see a trainer where you removed the back wheel and it had a belt drive arrangement to a flywheel. This looked great but it was expensive. Low noise would be a benefit too.