I have a 2007 iMac and I'm ready for an upgrade to the latest 2013 version. I will be using it most of the time for: Photo editing (Lightroom, iPhoto), Music (Garage Band, Logic Pro), and some small video editing (IMovie). For these applications which out of these 3 would give me the most performance boost (they're all the same price). Also keep in mind I'd like to have the machine for at least 4-5 years before upgrading again. Base model + additional 8GB RAM Base model + fusion drive More expensive Base model (better CPU + Graphics Card). Right now I'm tempted to go with the more expensive unit and eventually down the line upgrade the RAM (which I heard is difficult to do in the 2013 iMac.... although I've upgraded the HD on the 2007 myself). I've researched this online and I'm amazed how many different opinions I found. I always thought this is a strictly technical question which could only have one answer. Any experts out there who could weigh in? Any other options I might have missed? Appreciate everyone's help!