2019, 27” 5K iMac, No T2 Chip, You can run Mojave or Catalina, Memory is easy to instal and the Flash drive can be upgraded or replaced if faulty, Memory can be upgraded to 128GB

2019 16” MacBook Pro, has a T2 Chip, Memory and the Flash drive no upgrades after purchase, If faulty you have to replace the logic board, very expensive,  you have to run Catalina or newer

2017 27” 5K iMac Pro, has a T2 Chip, To instal the Memory you have to take the whole machine apart, Flash drives Apple only, very expensive, you can run High Sierra, Mojave or Catalina, 2017 Due for an update, Memory can be upgraded to 256GB.

We didn’t include the New 2020 Mac Mini because it only has a 1.5GB Graphics card.

As with all new purchases, make sure you buy AppleCare+