I currently have a Xtracycle and a Burley flatbed trailer. I still want/need two more trailers. I want the long BAW--- trailer model 96A.
I also want this bicycle camping trailer:
http://www.tonystrailers.com/mobileshelter/

I use the Burley for loads I don't want to put in the freeloaders. I also use it to get sand for my driveway in the winter.
I would use the Bikes At Work trailer for large loads, and/or furniture.
I would use the tonystrailers.com trailer for camping
I love my Xtracycle.