just need your opinions guys. i have an early 08 black macbook;2.4 ghz 2 gig and 250gig hard drive. i use it for home studio recording, photo editing and a bit of video editing. this is my first mac and i really am impressed. now i have the budget to upgrade to a unibody mac,but im really researching if it's worth it to spend all that cash?or should i keep my old blackbook?