Current MacBook Pro: mid 2009, 2.26 Core2 Duo, 8GB RAM, 160GB HDD, GeForce 9400 I've been offered a barely used one for $1200. Should I bite? Is it going to be an improvement over my current machine that I've been meaning to upgrade from? It's 6 years old after all. It's the first unibody 13 MBP.