I have stayed at BC, Poly and POFQ. BC has my favorite location (love the walk to Epcot), but POFQ is my fave. Pretty, quaint and charming, it really does feel to me like a little neighborhood. I've stayed there the last 4 trips and would happily keep going back, but I'm trying POP for the first time next trip to cut down expenses.
One thing I love about POFQ is that I don't even worry about making room requests, it's so small, and I'm convinced there's no location I'd be unhappy with there. I'm a little anxious about where they're going to put me at POP.