I'm gonna go with Chris Aceto. Speaking of which, I need to pick up his books.
Well, I'd never choose Rum-Butt. He seems to have made a name for himself following around the pros and stealing ideas. Not cool.
Chris Aceto is very skilled at personalizing diet and getting herbs / supplements in check for the INDIVIDUAL. Very important.
Chad Nicholls is great for getting ripped, but I think he's a little too cookie cutter in his approach.
Of these, I'd choose Chris first, then Chad. I'd stay away from Hany. There's another pre-contest coach that was used for a while by Flex and even Dexter and this was the same guy who helped Dex win the Arnold in '05. So I'd go with him third. (What's his name??)