I'm currently in the midst of upgrading my current machine (an older 14.1' PC notebook). Not new to Macs, as I have an iMac, but this will be my first Mac Notebook. My current notebook is a whopping 5.5lbs, 6.2lbs with the adapter brick -- and I see that the rMBP 15' is 4.46lbs (shedding over a pound in weight alone). Though, my current notebook is slightly wider and much thicker than the rMBP 15' -- the Mac notebook will be about 1.1' inches wider. I was considering the 13.3' models but after seeing them in the store, the screen just looks a bit uncomfortable to be working on for long periods of time. I'll be in law school and I'll be in class for at least 5-6 hours per day for at least 4 days a week in my first semester. I feel that the rMBP 15' will obviously give me more screen real estate and render text much richer (I will spend a lot of time reading PDF files and scholarly articles on my screen). Aside from productivity, I do appreciate the speakers, the SSD drive and 8GB of RAM (I tend to have many applications open) -- as well as the occasional video watching or gaming session (perhaps the rMBP 15' can handle these tasks better)? In conclusion, I'm just worried about portability. As an undergrad, I didn't carry my 5.5lbs beast too often (maybe twice a week at most). Anyone that has the rMBP 15' please comment on your experience in moving this computer from place to place (or if you're in law school and use this computer or see others with it in class). FYI: Not sure if this is pertinent but I'll be living at about a 10 minute walk from my classes at the law school building. Thanks to everyone's input in advance. Please pardon this long post.