Okay. This isn't spam, just spreading the word. Anybody use these BBP Bags? Read about them on ilounge, and after a good 3-4 backpacks/shoulder bags, decided that my sore shoulders could handle no more commutes without one. I got a Medium, and it fits my 15" MBP very snugly. Found a "Street Flow" at a Sony store, though the Apple store has just picked up the "Hamptons" model for sale. Anybody else have one? What works, what doesn't? How much weight can this thing carry? So far, on my first commute into the city, it's already made a huge difference, and I'm pretty much sold. Let me know the reasons to return this thing and go back to my back-ache inducing North Face.