I spend A LOT of time working at my current laptop, which is currently giving me headaches. I've decided to replace it with a MacBook Pro, but I'm uncertain as to which model. I do a lot of research that involves reading & annotating PDF files. Its typical for me to spend 8-10 hours per day in MS Word. I will have to do some minor video editing for the next two years. I do quite a few Power Point Presentations as well. I've come close to ordering the 15" rMBP with base processor, base SSD capacity, configured with 16 gb of RAM several times. But that's really pushing my budget. Is this overkill? What would be a reasonable model that would best fit my needs but not need replaced in five or so years. I have longevity concerns regarding the 8gbs max of RAM in the cMBP and 13" fMBP models. I know that the cMBP 15s are user upgradable to 16, but I don't want to mess around with that. Additionally, I've never worked with less than a 15" display. Finally, I've never used OS; Windows my entire life. (My Retina iPad, iPhone, and iPod touch impressed me so much that I'm sold on the "user experience") Is it a rough transition? I cant afford to take time off to attend a seminar at the Apple store. Recommendations Please. SSD is a must have and portability isn't a factor.