I have a 2011 15" MBP, I was looking at getting either the 128GB Crucial M4 or OWC Mercury Extreme. So I am not a heavy user, I do moderate video editing and photoshop but nothing heavy, so I was wondering if I would notice the speed difference between the M4 and the faster Sandforce SSD. Also I know for the Crucial M4 needs the 02 firmware. I read on other sites about stuff on LPM, AHCI, IDE mode stuff I haven't seen before, do these things apply for OS X. Are these things that I will have to worry about when I boot into bootcamp. I plan on getting a 128GB SSD, but would there be a big performance hit compared to a 256GB SSD. Would there be a loss in performance since the 128GB SSD I would buy would be almost fully used?