For maximum results in building muscle, what is the ideal amount of sets per week per body part?

I wanted to design a full body workout I could use during the Dirty Dozen challenge. What do you guys think? What has worked for you in the past?

I read this on a well know forum..

Just so you know all my bulking was natural. All I use is food,protein and BCAA's.

30-40 sets a body part per week is completely normal, it is whats required for new growth. You need to be working each muscle group twice a week, with atleast 4 exercises for that muscle group per session. How can you think that doing 3 sets a body part a week possibly make you grow? That is not enough to accomplish anything, trust me. Sure you may make a few noobie gains with this program but they will stop within like 2-3 weeks if you go this low of volume.

Btw bodybuilders and powerlifters alike use steroids. Who is bigger? a bodybuilder. Who is stronger? a powerlifter. So to oversimplify this, if you want to get bigger train like a bodybuilder, if you want to get stronger, train like a powerlifter. Either way though, you need more sets/reps.

You will not reach anywhere your goal with your current program, plain and simple.

Any thoughts on this advice?