Just a bit about my experience with Estrostep FE:
I was on it straight for 2 years. I absolutely loved being on this, I had no weight gain, no tenderness, my skin cleared up (although I didn't have a huge problem with this), and my periods actually became nonexistent.
During the first two months of taking it, my periods were MUCH shorter, and then after that, they disappeared completely while on the medication. I did ask my doctor, and a couple of other doctors about this to make sure it wasn't indicative of a problem, and they all said the same thing: it meant my body had adjusted very well to the BC. I had been off it for about 6 months, and it came back, so I know I am still normal

I just started it up again though.
Also, I am overweight, and this has been working well for me. This is the first place I had seen anything regarding it being ineffective for anyone overweight.