Okay, a little bit of background here. I'm planning to continue my studies in Australia in my next 3 years, particularly at Hobart in the island of Tasmania. I would be carrying my 13 inch Macbook Pro along with other stuff like my iPad, portable battery charger, mouse, books, pencil case, and maybe even home made food. I would probably be walking a lot outdoors, maybe even in harsh weather like snow and rain. I've been browsing on the Razer gear section and I noticed there were 3 types of bags. The Tactical Pro, Mercenary and Utility. Has anyone actually owned one of these mentioned here? I would like to hear some real user feedback before I make my decision to purchase one. What do you guys think about those bags? Any recommendations? I've never really got hands on experience on these bags.