Just wondering is this setup worth getting over an Air? Purchasing my first Mac this Friday, and want to make sure I'm buying the perfect machine. I realize that the processor is faster on the Macbook Pro, which would come in handy as I'm going to college studying Computer Science in the coming weeks. I also realize the screen resolution difference is pretty significant, but the machine being faster overall is a bigger win for me. Also, when purchasing a Macbook Pro 13" i7/8GB and replacing the 750GB HDD w/ an SSD, does that SSD come TRIM enabled? Can someone enlighten me further as to what TRIM is/does? Sorry for rambling on, but the excitement is getting to me. Thank you for reading!