One small caveat: Comparing one of the Doc's transmissions to one of Ed's is somewhat apples to oranges.
The Doc has a supply of good used parts on hand that he can install in your trans. Ed will almost certainly use new parts, especially wear parts like synchros, if he feels yours are worn.
The Doc does this as a bit more than a hobby. Ed makes his living working on Porsches. (Which may or may not mean anything.)
The Doc has a lot less overhead than most pro mechanics.
The Doc charges less in labor than pretty much any pro mechanic.
So you will be getting more new parts when going with a trusted pro, but you will be paying more for the work. I personally would not hesitate to use either option. I know and respect Ed greatly. I know the Doc, and respect his work at least...
(And enjoy giving him grief when I can.
)
--DD