Hi, Not Cathe here, but I did STS rotation twice. The second time I extended Meso 2 by 4 weeks because it's my most favorite way to lift. I saw more definition and growth than the first time. If your are looking to build muscle, then Meso 2, Hypertrophy is the way to go.
I'm doing the STS/Cardio rotation now and I'm thinking of doing the same thing again.