I asked the same question at the LBS. The owner wouldn't commit, but mentioned that he couldn't stay on the rollers. Not everyone can. Not being gods gift to cycling, I went with a trainer. It would be darn nice if you could find someone locally who would let you get on and see if the work for you. A very good mechanic at the same shop said rollers were better. Less boring because you have to pay attention to what you are doing.
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Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.