I am trading my Unibody Alum Macbook base model with 2.0GHz Intel Core 2 Duo, 160GB 5400rpm HDD. Nvidia GeForce 9400 wirh 256, 2GB of Ram for a iMac 2.0GHz Intel Core 2 Duo, 4GB 800MHz DDR2 Ram, 250GB 7200rpm HDD and $300 cash or I was just offered a 24" Alum iMac with 2.4 Core 2 Duo, 320GB 7200rpm,3GB of 800MHz RAM, and the newer Nvidia 256mb video card, BUT NO CASH. Which is a better deal? I am not hurting for cash as I am only in HS but I am looking to do graphic rendering.