We were in Norwich recently and came across a familiar-looking child trailer. Sure enough it was a Chariot, but was actually the Captain model, in Cougar's 'City' category. Its solid floor makes it heavier and noiser than the Chariot, but the owner was well happy with it. The luggage space was also much greater on the Captain - especially compared to the Chariot's almost inaccesible rear compartment.
The owner also said that he had bought it from a UK-based importer, known as Kinetics, and was pleased with the service. Probably worth a look before going too far down the US-sourced route.