I have a 2007 santa rosa 17 inch mbp with a 7200 rpm 160gb hard drive that is getting too full. My main work involves photo shop and video editing. I would like to upgrade the hard drive to either a larger 7200 rpm drive or perhaps a 250 ssd drive. First, can my mac take such an upgrade and could I do it myself? Second, I have read about some problems with performance on ssd drives regarding their unequal read/write times and how this can result in negligible performance improvements (or even performance bottlenecks) when doing certain types of work. For what I do, is an ssd drive worth it or should I just look for a good regular drive with a larger capacity than what I have now? Thanks for any advice.