I am a little biased towards this one because this is the one that I own and carry! But. I am obsessed. (I realize this word is overused, but I felt like the drama was necessary to convey how much I truly love this backpack.) The teardrop zipper down the front allows easy access to the main compartment, while the concealed carry pocket is in the back. The concealed carry pocket has access through zippers on both sides for a quick, easy draw if the need should arise, and it comes equipped with a universal, velcro-adjustable holster inside. The pocket fits my Springfield Armory XD-S perfectly, but the pocket is big enough to handle any full-sized handgun.