Incase Nylon Sleeve. I went to the apple store the other day to buy one ($65.00 including tax). Probably the best bang for your buck IMO. Big pouches for mouses/usb's/cell phone/cords/battery block/etc. The back has a big pouch to fit folders, papers, small notebooks, etc. Has handles to carry it, or you can hide them by pushing them into the pouches they made for the handles so you can't see them. Plus it comes with a cushioned shoulder strap that you can attach to the bag and use it as a shoulder bag. I read tons of reviews on it, and it got 5 stars everywhere I looked.
On another note, when I went to the apple store to buy one, I wanted the black one, and as i looked up at the section of Incase Nylon cases, there were like 11 gray colored ones, and 1 last black one sitting in the middle of all of them. I looked at every inch of it to make sure it was perfect, and It was the one for the 15" mbp I have. I pretty much thought of that moment as "it was meant to be mine" kinda situation

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Anyways, hope that helped, it's an amazing case, holds my mbp nice and tight, has cushions behind the zipper so you wont scratch your mbp when you close it. Looks nice, sleek, durable, weather resistant. GOOD BUY
