The best and worst Macs for upgrades and repairs

Believe it or not, upgradeability, durability, and repairability are parts of Appleu2019s DNA. Over the years, most Macs have lived up to that legacy, while others have fallen a littleu2014or a lotu2014short. Here's a look at the best and worst Macs ever when it comes to repairability and upgradeability.