I've asked quite a few questions about this, but probably haven't been explicit enough regarding my actual requirements, etc, so here goes: I am looking to purchase a 21.5 new release iMac (would prefer this to the 27"). I also plan to max the ram up to 16gb. I would also prefer to use my existing 1TB external HD rather than upgrade the 5400 to Fusion. So I would like to hear some opinions about this. What I will be doing with this imac: Photoshop CS6 only. No video, no RAW files, no games or other apps. Will be creating digital illustration with layers, often pretty heavy. Most files are around 3000 pixels max. Plan to write the files to the external and store them there also. Won't be using for anything else as I do web work and other apps on my macbook pro. That is all. I also don't plan to upgrade the machine very soon, so would prefer it to last me 5+ yrs. May also add SSD external later. Not interested in resale value especially. So, would this model work for me, do you think? I'm not really interested in the latest/greatest to be honest, just want an efficient machine that does the job. Have been advised to stick with 8gb ram but would prefer 16gb. Thanks!