I'm finally taking the plunge and joining the dark side! I currently have a Dell Inspiron N 510 which I refer to as the brick house. I was at the Apple store a few days back and I left more confused than when I arrived. I'm going to be taking my laptop to school 75% of the time. So portability is a major factor but I also want a laptop that won't be obsolete in 2 years. I'm debating to with a 13 in rmbp with 250 gb ssd or a base 15 rmbp with 16 gb of ram. Also screen real estate is important since ill be working on spread sheets and split screen multitasking. What do you think is the best option?! Thanks!