I'm having a MBP 2.2 i7, 8 gig RAM, manufactured next week, it ships with the 7200 rpm drive. I want the fastest possible SDD drive in it, but a few of them say that their brand are the fastest in the 240GB range. So please help. Being a photographer, I will be working mainly with Lightroom and Photoshop with files ranging from 500-1500 Mb. Looked at the OWC mercury EXTREME..