I just switched out for a smaller laptop and am now using a 13" Unibody MacBook Pro. My EDC bag is a Synapse 25 (my favorite backpack ever), in which I currently carry a 4Z Cache. The 4Z is too large for my new companion so I went to look for the right size on the site. The laptop bag fit guide says I should be getting a 6Z (which of course is now out of stock, great timing on my part), but it looks like it's not nearly as custom a fit as the one listed for the new 13" MacBook Pro Retina. I'm hoping the collective forum knowledge can tell me if there a version of the Cache in previous years that was exactly sized for the 13" Unibody. If so, anyone know if there any way I can get one? I realize it's a bit compulsive, but I'd really like to have a cache sleeve that fits snugly. Thanks!