To be honest, if you want to find the answer, you'd either have to use EVERY MOVE many many times to see if there is any stat change effect that isn't in it's description, compare it to the other versions, as well as look at its POW./ACC. and compare it to the other versions.
I don't remember the exact EFF.-POW.-ACC. of every move cause I usually just say, "Hey, higher ACC. and POW., lets learn it," but I'm sure I've used everything from GEN.I to GEN.IV
