So I am about to purchase a 13" High End Macbook Pro(2012) and wonder if I should get the 128GB Solid State Drive for an extra $100 or just get the basic 750HDD then upgrade later? Any suggestions? I'm not really sure if 128gb SSD will be enough for me but at the same time I own a 1TB external HDD so I can always transfer files in it. Right? Tough call.