Hey all, I think I am posting this in the right spot.. I have been reading forums non-stop for the past few days regarding differences in Iris Pro, 650m, 750m, and then Haswell, IB, yadda yadda yadda.. I'm a design student that frequents Photoshop (1GB+ files with 20-50+ layers), Illustrator, InDesign (2-3 page boards at ~36" x ~36"). AutoCad maybe 2 times a month for a blueprint design or a rough rendering of a project site. I occasionally use FCP X, but that does not matter to me at this point, as for the use at only once every two or three months it doesn't really matter if I have to wait 10 more minutes for an export. For InDesign, I always have had the display setting set to High-Quality so I can get a decent idea of what I'm printing. I also use a lot of Lightroom and Aperture to edit my photography for print. I just sold my late-2012 27" iMac w/ 3.4 i7, 24GB RAM, 128GB + 500GB SSDs, and the 680MX; so I have a pretty high standard of what my retina needs to be. I understand that desktops are not equal to laptops, but I need something that won't struggle in my uses. I have been leaning toward purchasing a used/refurb early-2013 model, as there have been a few popping up in my area for a good price. BUT, with all the reviews of how great (or is it actually?) the late-2013 with Iris Pro is, I am thinking maybe I could instead pick up a refurb of one of those. I can typically buy a early-2013 with 2.7/16/512 for around $1500-1600, and I have seen one or two late-2013 2.3/16/512 for $2000 (2200 in apple refurb store). There is just so much information that seems to contradict itself from some threads on here, that I'm not really certain as to what I should be buying anymore. So essentially what I absolutely need is the 512GB SSD, and 16GB of RAM. Ideally, zero lag in Photoshop, and minimal in InDes with high-qual display settings (if that's possible). Processor is essentially useless to me, as the benchmarks are so close, and I don't use FCP or AutoCAD too much to take those into consideration. No plans of selling whatever I choose for 2-3 years. My overall budget with tax is $2000, could potentially up to $2200, but was hoping to put some more money into my 'new lens fund' for my 7D. So, what would you buy in my shoes? A refurbished late-2013 with the Iris Pro (and no 750m), or an early-2013 with the 650m? Thanks!