I'm deciding on whether to buy the 13-inch 2GB of RAM or 4GB of RAM. My local Apple store does not have the stock models in stock. The question is if 2GB of RAM will be enough for me. I already have a 2010 MacBook Pro 17-inch 2.53GHz Intel Core i5 and a 2009 iMac 3.06 GHz Intel Core 2 Duo. And I use my computers for web browsing, msn, watching netflix, using pages, using photoshop, and taking notes in class. I won't be upgrading to a new computer every year, so I'm wondering if 2GB of RAM will be able to help me survive and let me to update to Lion in the summer without any disadvantages. And based on other threads, the BTO models seem to take a while to ship, while the stock models ship very soon.