Inertia is important
A trainer is better if it closely replicates an actual cycling experience. Hence the graduating complexity and cost of fan magnetic and fluid drive trainers. The more you pay the closer the experience is to replicating the inertia of what happens in a real ride. You want the trainer to feel as if it takes more exertion to get up to speed but also want it to "coast" when you stop pedaling. This trainer is a mag drive and does a good overall job but doesn't coast well. I find myself pedaling all the time as if I were hill climbing. That's OK for getting exercise but not good for getting in a sustained ride. Those brief periods of coasting help the muscles recover and allow longer ride time. I could stop entirely for short periods but that's not how I want to ride. I do use the gears to vary pedaling speed but can't use the high gear and standing to vary the working muscles enough on the trainer; the resistance doesn't go high enough for that. I haven't tried a fluid drive so don't know if it would be much better. I suggest trying a trainer somewhere before buying. All said and done I would probably buy this same trainer again as it is solidly built and with a smooth tire on the bike quiet enough. Now if someone put a 20 lb weight on the spinner...More detail ...
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