I have a mid 2010 Macbook Pro 17" with an i5 2.53ghz and 8GB RAM, nVidia 330m 512MB. At this time, for everything I do, I can imagine this computer lasting me a good long while. Screen is high resolution, processor is fast, etc. The only thing is the hard drive. I'm currently debating on upgrading my current hard drive. Right now, I have a Momentus XT 500GB that I installed last year. It's almost full and I can't really tell anymore if it's "fast" anymore. Now that the Momentus XT 750GB is out, I'm thinking of upgrading to that. However, I'm also thinking of getting a 128gb SSD to use as the "main" drive and the current 500GB to be moved to where the super drive is right now. Both options actually cost the same (because of the caddy and enclosures needed). My question is which option is best? I use my computer mostly for photo editing and web browsing. Also, I'm concerned about using two hard drives. For some reason, I can't understand how it works. I have over 50GB of music and I would put that into the 500GB, but I wouldn't know how to do that since the "music" folder in my current login is tied to this hard drive. I'm not sure how to make that point elsewhere. Same thing for documents and photos. Hope that makes sense. Lastly, which one would be faster and won't get progressively slower?