Old 2012 Models
I still run 3 upgraded old Mac Mini 2012 models with vSphere installed as a lab setup. Work great to this day and have been running 24/7 for 2 years without issue, even today with 6.7 installed. With CPU support dropping out of vSphere its time to upgrade Can't see me replacing them with further minis without being able to upgrade the RAM and SSD without paying the apple TAX. Time to start looking around else where. Shame as these have been rock solid devices for me. On the plus side they might still be worth a few quid with 16GB of RAM and 500GB SSD drives.