4 years on and the base 13" MacBook Pro I bought in university is struggling. It was bought to run CS5.5, and it's just too slow nowadays, so I'm hoping to get a Retina iMac to replace it. Don't need the portability as much and want to be future proof. Checked them out, the 21" Retinas seem okay price wise, but having looked into them, they appear to be under specced compared to the 27" ones. I'm looking at the mid 27" iMac, the first one with the Fusion Drive, and the Radeon R9 M390. That just about fits into my budget, and am hoping I'll get a few years out of it. So it'll be used for Creative Cloud or whatever. Mainly AI and PS, some InDesign, and I may dual boot Windows on there too. I realise I can upgrade the RAM on the 27" model, but am I going on the right direction on buying a 4K+ machine that'll still be half decent in say 4 years?