spinning bikes...

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My fiance and I are looking to buy a SPINNING BIKE... She found one she likes, it is a little pricey, but if you want QUALITY, I guess you have to pay for it.... My question is, does anyone have any advice or reviews on BELT DRIVEN vs CHIN DRIVEN DRIVES...? ? ? I would imagine that the belts would wear out eventually and how hard are they to replace...?

Thanks for any help