I work for a company who manufactures virtually everything for top end suppliers and for use on our own cars.they do no yet buy everything from China but for pricing reasons its heading that way. Rally design will not be beaten on price due to their bulk buying and is a good budget option and some of their items do the job just as well.However i believe often you get what you pay for,and brakes in my opinion are very important for safety.
In a modern spec car we are currently building we are fitting the AP Racing CP5516-7
which seems like a very well engineered tight pedal box.
For historic spec cars we manufacture our own based on a standard ford pedal box similar to Gartraks
Prior to your post smcka has contacted me looking into a possible supply of higher end components so that people have the option. I plan on manufacturing them in Australia if i migrate. smcka is a supplier and will be getting good reviews due to his good customer service and high interest in the items which he supplies.