This may be a stretch, but does anyone out there own an Arc'teryx Arro 16 backpack with a Tom Bihn Brain Cell (size 4Z) inside to carry a MacBook pro? Arro 16: http://www.arcteryx.com/Product.aspx?Mens/Arro-16 Brain Cell: http://www.tombihn.com/page/001/PROD/300/TB0390#at I cannot seem to find any interior dimensions of the Arro 16 anywhere. I am looking for a high quality laptop backpack for a unibody 15" MacBook Pro, though ideally the backpack can be used without a laptop inside. I have also looked at Booq products, though read that the quality may not be as good as Tom Bihn or Arc'teryx. I'm sure Tom Bihn has quality products, but their design/style is not really my style. I like Arc'teryx products, but am afraid this backpack may be too small for the Brain Cell. If anyone else has other suggestions, please let me know. Thanks.