Transmission suggestions

I found an old guy that runs a hole in the wall tranny shop and I asked him about TCI trannies because I was looking at getting a TCI Sizzler. He told me that he has had one apart and all they did was take a stock tranny and threw a kit in and took out the accuator (spelling?) spring.
I don't know much about auto trannies but this guy took me around his shop and sat me down for about 40 mins and showed me different things about 727's I learned alot of stuff about 727's in that 40 mins and all I did was walk in and ask about TCI trannies.
So instead of spending the money on a brand new and shiny tranny Im ganna take a old 727 in my garage and goto this old guys shop and have it rebuilt by a pro save 200 bucks and get an education at the same time.