Hey everyone, I've already posted a couple of times on different topics about my new iMac, but I promise this is the last one! On my last thread I asked a question towards the bottom but it got buried so I figured I'd make one specifically about this question. I'm going to be receiving a new late 2015 iMac 27 inch soon and have a few questions about storage. I've done some research but there are various answers and I really value the opinions from members of this site. Here are the specs: 4.0GHz quad-core Intel Core i7, Turbo Boost up to 4.2GHz AMD Radeon R9 M395X with 4GB video memory 32GB OR 64GB RAM from OWC, still undecided I am a video editor. I use Premiere, After Effects, Photoshop, and a little bit of Maya as well as Element 3D. Most films I'll be making will involve 4k shots (from Phantom 3 UAV and GH4), most of the time involving creations in After Effects and sometimes involving 3D models in real life scenes, and most will be around 2-10 minutes long. Now to the question: 1. 512GB internal SSD or 1TB internal SSD? I'm trying to decide how I'm going to go about this and here are my two lines of thinking: A. Go with 512GB SSD internal for OS, applications, and media cache/go with RAID (something like OWC Thunderbay4 Raid 5 8TB) for media and renders. B. Go with 1TB SSD internal for OS and applications, as well as currently-being-worked-on project, a cheaper/slower but large (say 12TB) external storage drive just to house older projects, and say a 256GB or 512GB external SSD for caches. C. other Is it bad to have an external SSD just for cache? Should it be on the internal? I'm new to learning about caches, drives, hardware questions, etc. so don't be too hard on me if this stuff seems easy to you! Thanks, and I really appreciate your help!