Tech: Dell U3219Q -- 4k 32" display, USB C power delivery, builtin KVM switch to go between HDMI/USB3 and USB C, running it at a 1x resolution for a 3800x2000 logical display. It's pricey, but I can do one monitor on this and be happy.

Not Tech: Rene Herse Rat Trap Pass/Nachez Pass super supple wide tires for my tandem. Boosted the average speed by ~1+mph (~16mph to 17+ mph) (with the same stoker) over 2-3 hr rides, and more comfortable, especially for the stoker.

I bought the 34" curved Dell monitor (U3419W) with the KVM switch built in and I am very happy with it.

Dell's Mac support is pretty bad but being able to hook 3 computers upto the monitor works very well. I use usb-c, HDMI and display port.

I found a command line tool for mac that sends the correct command codes to the monitor to make it even easy to switch machines. My one laptop has the touchbar and it is easy to add buttons to it for monitor switching.

I've used Dell Ultrasharp monitors with Mac and Linux for more years than I care to remember, and I've never had any trouble with them. I'm not even clear what Mac support means in the case of a monitor.

(though, early on I had to configure modelines for the 20" widescreens on X. I think ubuntu 8.04 fixed that for good.)

I recall two things that people complained about with the Mac support

- the USB-C charging was terrible because if you turn off the monitor it stops charging the laptop. I believe the same happens when the monitor sleeps. There is also this weird connectivity issue that happens if the mac with USB-C goes to sleep and the monitor is in use with another port. It keeps detecting/undetecting the USB-C port. I think it basically comes down to a lack of consistent power connection from the monitor to USB-C port. I knew about this problem and I just make sure my mac has a power brick plugged in.

- the 2nd problem was that their isn't any Dell software for mac which means that all settings and switching is done through the buttons. Luckily, someone hacked this together.

https://github.com/kfix/ddcctl

Overall, the monitor is absolutely fantastic and I would buy it again. I spent at least 40 hours researching monitors and looking for a high resolution (4kish), 32" or larger, IPS monitor. Everything else was either super expensive, out of stock/no longer made or had major problems.