On the AST sight they claim that if you do sets of 4-6 that you will always gain, and if your diet is right then you will be defined. And that drop sets burn muscle gain.
However, on the contrary I have also read that doing reverse pyramid is best the way to do.
Sure the quick and tasty reply would be to do what works best... but that is the thing I am severly stuck at 190 and want to be shaped better with more defintion.