I tried the non-PM route for about 4 months, using FG and SP steadily, with some WY. My breasts swelled a bit, and FG is great for digestion and getting a slimmer waist/hourglass shape, but there was no real tissue growth. That happened within the first month of taking PM, however, which I started in mid-December. Now I can feel the denser breast tissue right behind my nipples, so eventually if I go back to FG and WY to round out I should have a great foundation. I'm aiming for a full B-cup.
I use the Ainterol brand of PM, 3 caps a day (2 in the morning, 1 before bed) along with 160mg SP extract (also 1 in the morning, 1 at night). I'll probably bump the PM to 4/day soon, since I just ordered some more.
Good luck!