Uni-Flex Circuits.

I recently had a dead-​simple flex design put through Uniflex Circuits. I decided to pay the 4x price premium for fabricating PCBs in the USA in order to gain professional design consultation (i.e. to make sure I get good advice resulting in my product working well). What I got instead was an «ok» and the PCBs failed catastrophically.
When I took the design back and told them the story, they DID fabricate my re-​design for no cost. This second design worked well, so I am happy.
I would recommend fabricating here if you are on a tight schedule, but I wouldn’t expect to receive golden design advice. The people are friendly enough, too.
If you can wait ~10 business days, I would recommend fabricating in China and pay ¼ the cost of Uniflex’s services.