An update for 2022: My 2017 27″ 5K iMac was showing it’s age, and I had decided that there were times when a laptop would still be better than using my 11″ M1 iPad Pro, so I’ve upgraded to a late 2021 model 16″ MacBook Pro with an M1 Pro SoC processor, built-to-order with 32Gb RAM and 2TB SSD.
I realized that I’ve become spoiled with the 27″ display on the iMac, though, so I also bought a Lenovo p27-u20 27″ 4K Thunderbolt4 display. The monitor essentially has a Thunderbolt/USB dock built in, so it has pass-through ports for Thunderbolt, USB-C and several USB-A ports, along with Ethernet, so that I can leave peripherals connected to the monitor, and only have to connect a single Thunderbolt cable to the MacBook Pro, which also provides the power delivery to the laptop.