Hi, I'm wondering what slim backpack options are available for the 15" Macbook Pro Retina? I've done some looking around and so far they seem to be Brenthaven Slimpack Everki Studio Slim STM Impulse Incase ICON Slim Pack Incase City Compact Are there any other options besides these? Some of them don't actually look that slim. I would really like something like the North Face Microbyte in terms of size/feel, but that can still fit the 15" Macbook Pro. Thanks.