I have a mid 2009 13" MacBook Pro with the max 8GB RAM. It runs on the stock 5400rpm HDD through SATA II. Now I can get a Samsung 840 for $115 including tax. That's quite steep for me especially since I just do basic stuff on the MacBook Pro like web browsing, a little document editing, YouTube, Netflix, music, FaceTime, Facebook, etc. Since my MBP can not even run the 840 at its full speed due to its SATA II limitation, and since I just do basic stuff, I feel the $115 price tag is not justified. But then I haven't used a computer with an SSD. I rarely shut down my MBP but when I do the start up takes a good minute or two. How dramatic would the speed increase be especially given the SATA II limitation and do you think the $115 would be justified? I could just save this $115 and use it towards a MacBook Air in a couple of years or so when I upgrade. What do you think?