I'd like to purchase a new 27" iMac for editing video in FCP 7. My prior computer was a 2005 Mac Pro, so this will be a significant upgrade, and I'd appreciate the best configuration recommendations for editing video. My understanding is that the new iMac ships with Mountain Lion, which will handle FCP 7 smoothly, unlike Mavericks. So I'd like to purchase soon before the latter comes pre-installed. In addition, it's likely that I'll switch over to Premiere some day with a slim to none chance that I'll learn FCP X (if at all for the purposes of teaching). So basically I'm looking for configurations that will cover all my bases. But again, it's unlikely that FCP X will be a part of the mix. Two particular questions: 1) I always keep all my media on dedicated hard drives. So do I go with a 1 TB fusion drive or the faster (but smaller) 256GB all Flash drive? 2) Do I upgrade with expensive Apple Ram, or purchase cheaper Crucial ram and install it myself? Whenever I've brought prior Apple computers in for repair, they always suggest (without fail) that one of the reasons is that I've mixed their ram with 3rd party ram). Should I just suck it up and purchase theirs upfront? I look forward to everyone's suggestions for the best top to bottom configurations for a new 27" iMac for video editing in FCP 7 and Premiere (and maybe FCP X). Many thanks! PS: How do folks feel about the current state of the screens reflectivity. Despite the claims of 75% non-glare, it's still unnecessarily shiny compared to my 2005-era Cinema Display. Although I'd love to hold off until 2014 when the screens might be even less reflective, not to mention the Boswell chips, I need to get a new iMac now while Mountain Lion is still installed.