I having some problems with my MBPro 13 at work: it's a few years old, and after the High Sierra update last year, it's really struggling to connect regularly with my monitor via any connection (displayport, hdmi). I don't know if the connections are getting loose because of the constant plug/unplug, or if the OS update is messing things up. Regardless, my needs at work are changing a bit, and I thought I might go back to a full desktop. I'd love an expandable mini-tower Mac... but since that's probably never happening again... I guess it's iMac for now. I wandered into a local chain store that sells factory refurbished and liquidated items, and they had a late 2012 iMac for Cdn $749, or about $600 US. 27", 2560X1440, 16GB ram, 3TB Fusion drive, 3.4GHz, core i7 (I assume quad core). I can get an aftermarket warranty with them. I was hoping for a 5K screen, but this would be at work, and so I probably won't be doing much photo editing there (and honestly, I'm working on a pre-4K Apple 27" monitor at home anyways). Is the refurbished 27" iMac worth it? It's 5 year old technology at this point, and I'm not sure how many more OS updates it will work with. But how would it perform in terms of general speed and performance compared to current iMacs, etc.? It seems like a "good deal" for that price given that I prefer Mac OS and the stability it offers. Or should I just save my budget for a more current iMac?