Hi, Lauren! I have it on good authority that Laurens do well on PFFS.
I've been doing PFFS for a year and a half and have done very well with it, better than I have on any other program. The customer service is wonderful, and the good is good. I take occasional breaks (when we go on vacation, etc.), but other than that, I've stayed on it.
I personally do supplement the program a bit; I add yogurt each day, and occasionally another piece of fruit. It does slow down my weight loss now, though.
Hope it works well for you; let us know how it goes!