I'm a long-time, but former, Windows user. I switched in '09 and I can honestly say I have never used a 'recovery' disc that came with any of my Windows machines. I'm about to do a drive upgrade on my MBP and I'm wondering what exactly is on my disc that came in the box. Is it a full OS X installation? Or is it just recovery tools? I know most recommend a "clean" install and data migration on a new drive, but I'm not looking to go buy a copy of the OS just for this.