The only trailer with brakes is the Cycletote, you can see it at
http://www.cycletote.com/
I have had a cargo model for about 5 years. I have used it to to carry just about everything from returning cans and bottles to the store. And moving an apartment sized washer across town. The most I have ever pulled in the trailer was 150lb of dog food. My trailer is equiped with the brakes and they do work well.
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Bentbaggerlen
"When the spirits are low, when the day appears dark, when work becomes monotonous, when hope hardly seems worth having, just mount a bicycle and go out for a spin down the road, without thought on anything but the ride you are taking." - Arthur Conan Doyle