Buying an SSD is absolutely excusable, just buy the smallest one you can get away with and keep your machine very clean/small. I'm living comfortably with 40GB

Buying an SSD is absolutely excusable, just buy the smallest one you can get away with and keep your machine very clean/small. I'm living comfortably with 40GB right now, as all of my media (music, movies, whatever) is on my iMac.