Rusty,
I used the A&A one and it works ok. My valve body is a stock unit from 69'. It is hard for me to give you a solid recommendation as I haven't put that many miles on the car yet and I have highway gears in the back (2.94), so the opportunity for part throttle downshifts doesn't happen as often, but it was an easy install and seems to work, so hope this helps!
You will also find more on this topic on the c body forum. I found a couple of threads on there where guys raved about the A&A unit which is why I purchased.