Best?

Bruce Gordon, Co Motion ,
Bike Friday.. different niche..406 wheels to pack small and fly places.

I got a BF pocket Llama this spring,

a Koga Miyata WTR a few years back .. a used buy,

another way to get an equivalent rig thru The NL koga.com , factory, now,
is their customer preference menu based Signature program,
then they paint your name on it before sending to a
[non US,sorry , .. ] dealer to pick up.
http://www.koga-signature.com/nl/?utm_source=koga.com
Europe delivery Option, Fly to AMS and take a bus to the seller when you arrive,
it's a simple process.. A fly and drive for Bikes, instead of Volvos.
.. just bring your pannier stuffings..

They make a big wheel Folding Tandem, too..

.. and Peter White in NH, Tout Terrain importer .. Silk Road..
German Builder offers a frame set which has the Stainless Steel rack part of the frame.
and wiring runs built in for dynohub based lighting.