I was thinking about having just enough space to boot Windows 7 from. I heard that I have to save my programs in the same space that I have my windows files if this is true, I need about 40-60 GB to feel like I'm not going to run out of room over the next few years. on the other hand I see people boot Ubuntu off of a flash drive all the time. If that is the case, I might only need 8-16 GB to make it work. As for prices, I understand that SSD is still very expensive and i think that if I can get one for under $150 it might be worth a second look.