I want a MBP with a SSD instead of a standard HDD. I'm trying to decide between a 128GB and 256GB, but because of the large difference in price, am considering a 128GB, as long as all the things I want to be stored on the MBP will fit, with some extra space. I have about 30GB of music that I want to be stored on the laptop itself, most of my other files and documents can go on my external HD. So what I need to know is how much space the following takes up so that I can figure out whether I'll have enough: - OSX - Photoshop CS5 - Lightroom 3 - iLife - iWork - MS Office Obviously I'll have many many other applications, but they will be smaller in size than the above, so I should be able to fit them all on with the spare space I have. What I am trying to figure out is how much space all the above will take up, which in addition to my music will tell me how much spare space I have. If that is an acceptable amount, then I might just go for the 128GB. If not, then I'll have to think about 256GB, or perhaps just go with 500GB@7200 and then upgrade at a later date when I can afford it/when SSDs go down in price a bit.