+1 on the pics.
I've had a Bell child trailer for about 6 or 7 years. I've put thousands of miles on it, hauled kids, Goodwill loads, and even 200 pounds of sand in that thing. It has been an excellent trailer. I recently removed all the fabric and put a corrugated plastic deck on it. This past summer I got a Bikes at Work 64a and have even attached the Bell to the back of the BAW trailer.
The BAW is a more versatile and heavy duty hauler. However, the Bell worked for many years. I only upgraded because I wanted more weight carrying capacity (though the extra volume capability is nice too).