I need some buying advice. I am considering getting a 2010 cMP (3.33 6-core and 32 GB memory), which seem to be running between $900 to $1,500 through used resellers.
Right now I have a 2014 15" MacBook Pro with the Nvidia 750M graphics card. I do intend to keep this laptop as it has been great, but it sits in clamshell mode 98% of the time. I have one Dell P2715Q (27" 4K) monitor, and I would like to get another, but I doubt my MacBook Pro could run two at the same time. I have a
3-fan laptop cooler running under my MacBook Pro just to try to keep the heat down with what I have now.
I have to wear many hats, so at any moment I can be in Xcode, Final Cut Pro, Logic, Blender, WebStorm, MAMP, Affinity Designer, Affinity Photo, and VMware Fusion testing on different OSs.
I am happy to see that Apple finally lowered the price of the nMP, but I am still concerned about the longevity of this machine. I suspect the resale value will be next to zero by this time next year. I wasn't really considering a cMP until the recent Nvidia driver release, but being able to put a GTX 1070 or 1080 into a 2010 cMP 6-core seems like it would be a nice fit for me until Apple releases the 7,1 MP in 2019.
My main concern with the 2010 cMP is that I keep reading in these forums that macOS 10.13 won't be supported on the 2010-2012 cMPs. I don't know where they are getting that information, but I need to be able to have the most current version of Xcode until the 7,1 MP comes out. I also have a 2009 iMac that runs macOS 10.12 just fine, so I don't understand why a 2010 cMP would not be able to run macOS 10.13 when it comes out.
Speaking of iMac, I do not want another iMac. Yes, the 5K iMac is a nice machine that works for a lot of people, but I have had three iMacs in the last 15 years and I always had excess heat and graphics card issues with them.