Unlimited has hair, cloth, fluids and fur et al. If I remember correctly, it also grants a more seats for batch rendering. These are the "pros". The con is that it will cost you (approx) $AU9-10,000 as opposed to (approx) $AU2-3,000. If you only need a cloth sim, try Maya Complete and a 3rd party plugin.
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http://usa.autodesk.com/adsk/servlet...112&id=7635770