Just got rid of my Seagate 500GB Momentus XT drive and replaced it w/ a 750GB 7200RPM Seagate. How big of a performance hit will I be taking? Model #'s: 500GB: ST95005620AS 750GB: ST9750420AS I figure it shouldn't be much, since I don't use the same programs and applications over and over again. I am back and forth between many programs and Boot Camp. Didn't take any $$ hit, as I sold the XT for the cost of the 750GB, but I just want to know what it'll be like (I'm so used to SSD's on other computers, I forgot what a regular hard drive was like). Thank you!