Re: Snap EZ vs. FF vs. FB fit
I would say that a medium FB and a medium FF fit about the same, I have both and ds is just growing into them both at the same time.
The medium Snap-ez fit quite a lot sooner though, almost 2 months sooner. The mediums on these fit quite small I find. Ruth at Snap-ez told me that once you get to the last snap setting on the legs that you are ready to fit into the skinny large. So I don't know if those would work for you...the tummy opening on the medium is 13-20 inches, and is the almost the same as the SL 13-22 inches.
Depends if you like the whole low rise thing as well.
Mama to Tristan (3) & princess Phoebe (13 months)