I'd say six of one, half dozen of the other. Both are very good trailers.

Just a thought:

Why do you want a flatbed? I ask because the standard canvas wrapping that comes with the Croozer cargo or the Nomad is really handy, and pretty water resistant. I've found that it's real nice to just undo a couple of hooks and be able to get at whatever is in the trailer in seconds. Unless you're carrying some very heavy or bulky items while not on tour, I'm thinking you might regret not getting a covered trailer.