Well, I ruled out the Wike trailer because it won't work with my bike's frame/hub combination, and it looks like that Carry Freedom hitch would have the same problem for me. The Burley Flatbed cost me $100 because I share it with my brother. He only lives about 5 miles from me, so that works out well. It's been great.
The Wike seems very economical and I like the simplicity of the Carry Freedom design. I think you'll be happy with whichever of the 3 you end up choosing. It looks like you've narrowed it down to 3 very high quality trailers.
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