I am looking for an iMac mainly to watch DVDs, TV, and do general home apps. Which would you recommend? The 24" is much more expensive, is the screen real estate worth it? I have a 20" ppc iMac and loved it; but this was many moons ago. Also, how can I have easy integration between the iMac and my powerbook (it has bluetooth and airport)? I will use the powerbook to bring to class (it's a 12" ultra portable). Thanks!