I am stuck with a dilemma, I have a 13" Early 2011 MBP that has 8 gigs of memory, and a 750 GB Momentus Hybrid Drive. I also have a 15" rMBP, so I don't need both. Time to get rid of the 13" MBP. A few questions: Is it better to wipe the original 320 gb hard drive 7x and then reinsert? If so, how am I to load ML? Or should it go back to SL? I am not sure if the Momentus drive because of its hybrid nature should be wiped 7x, or if that would increase the value.