Hi, I have the mid 2009 unibody MBP 2.53 ghz, etc.. (it's in my sig) My question is, being that this Macbook Pro is approaching 3 years old, would it be wise to just invest in a faster hard drive with more capacity than the stock 250gb, or should I just wait for the new model and trade up? This one is in pristine condition and hasn't given me any trouble. I just wonder how much longer I could continue to get the most out of it before essential parts can be expected to start degrading. I don't want to put a new hard drive into it if soon the backlight will go out, or the logic board fail, etc... What would you do? Thanks.