I currently have a late 2006 edition iMac with 160gb hard drive, 1gb RAM and a 2.0GHz processor. Needless to say, I need something more at this point. We've gotten more into some minor photo editing and some home video editing, but nothing much more than that (other than the normal iTunes, Office Suite, etc). I'd like to keep this computer for another 5 years, but am trying to weigh whether or not the Fusion drive would be beneficial. Is 8GB of RAM enough? I know anything I get will be better than what I have now, but I'd like to try to maybe get a little more than what I need knowing that I want to keep this for a long time. Any thoughts?