i do compound first. some people have had better success doing the opposite. you've got to figure out whats best for you. i would say try it both ways, and add up total weights/reps used to figure out what works better for you. for example, if you can CG bench 185x10 reps, you're lifting 1850 pounds + the isolation exercise. when you switch the order, if you can only get 185x8, you had better be stepping up the reps/weight of the other exercise to compensate for lifting 350 pounds less. does that make sense or did i screw it up?