Rotary Compost buns V traditional methods

Has anybody got personal experience of using rotary compost bins.There is a great deal of hype available as to their efficiency and speed of processing etc, but I cant find many claims that have come from independent sources.
I have seen one model on the internet which originates from Sweden and has a write up from Devon County Council.This unit even claims to compost household waste, ie cooked and uncooked food!!
I would appreciate any comments
best regards,
Ian