Who should I buy a 727 or 904 from?

From my personal experience I have purchased two 727's from two different builders.

First tranny: Pro Street Rev Manual from John Cope Absolutely NO problems. Put it in my 68 GTS

Second tranny: Purpose built race tranny from ProFormance (Dynamic) for my 69 Dart race car.
Trouble right off the bat. Bad Servo (no second gear) replaced servo with a new one supplied by builder, fixed problem but not before the second gear band was shot. Had local guy put in new band. Then high gear clutch pack came apart. After that I put my stocker with a rev manual valve body in it. Ran the rest of the year with it.

I've looked at Transact of Indy. Unfortunately no extra money.