Hi there. I'm making my first post on these Boards because I really need some advice from you guys. (Strange, but it seems the more I read the more unsure I get sometimes.) It's finally time for me to upgrade from my ole' trusty 2003 PowerBook G4 with it's massive 60gb, 4200rpm hard drive. I know, really! For the past week I've been going back and forth between the Retina and the Original MBP, and every configuration possible. (I've now decided 99.9% on the Original MBP 15", 2.6GHz.) The thing I'm struggling with is the hard drive configuration. My greatest issue with my old machine is the 60gb hard drive is nowhere near what i need. On my new MBP, I'm going in with the idea that at some time in the future I will replace the Optical Drive with a second hard drive of some sort. So here's my question for you guys that know much more about this stuff than I: Which is better, strictly from a technical/functional standpoint, not financial: 1. Get BTO with 256Gb SSD now, and then later put 750Gb HHD in Optical Bay? 2. Get BTO with 750Gb HDD now, and then later put SSD (whatever size) in Optical Bay? Does it even matter? Is it better if Apple puts in the SDD from the beginning? Does doing so add some sort of extra chip/bus/controller or whatever that wouldn't be present if I added one in myself later? This then also leads me to one other question: If I were to go with option #2 above, where I start out with the 750gb HDD -- when I go to add in an SSD, does it matter if the new SSD goes into the Optical Bay or into the original HDD space? IOW, is it okay to have the SSD as your "second" drive in the Optial Bay, or is it better to put it in the original HD slot and then put the original HDD into the Optical Bay? (The SSD, wherever it is, would be used for the OS and Apps.) I really appreciate your input! Thanks.