So right now I currently have apples 128 gb SSD in my HD bay and a scorpio black in my optibay. I like to use my computer on the go a lot so battery performance is an important factor. However after putting in the Scorpio black I've lost about 1.5-2 hours of battery life. I could probably get by with about 250-300 gb of built in storage. Right now I'm considering either getting another 120 GB SSD or a 256 gb SSD and just replacing my apple SSD and putting the optical drive back in. The last option i was considering was getting a hitachi 5200 RPM drive hoping it would consume less power than the scorpio black. Any thoughts as to which would be the better route for me?