I own a PPB. I purchased it on a whim on babysteals not too long after I learned about them, and I had not heard of JJB and the BFF yet. When I learned about the BFF and all the features I had a lot of buyer's remorse... but now that I've been using my PPB for ~4 months now, I LOVE it. There are a few things I wish were different about it, like I wish it had a magnetic closure instead of velcro and I wish it had a carry strap on top. But overall I find it to be a very useful bag. And it's so pretty! The BFF looks smaller in person than I expected it to be, and there have been a few times when I've had to stuff a LOT of stuff in my PPB and I'm happy it holds as much as it does. Not sure I could have stuffed as many blankets/change of clothes/nursing cover in the BFF. I also really like the attached zip-up changing pad.
I really don't think you can go wrong with either, they are both great bags! However, since organization is a top priority for you I think you might like the JJB better.