If I had my top 5 it would go something like this:
Pierre (always ripped and in fab shape.)
Mir- He gets better and better each time and might have best definition for a heavyweight.
Buffer/Rogan-With their expressions, u can always tell who they think is in great shape.
Dominick Cruz- Never have to worry bout him making weight!
Anthony Johnson- His body shape seems to change each weigh-in.