Which monitor should I get?

Ditto - I’ve switched to the LG 34" both at home and at work. I use the 34UM95 at home and the 34UM88 at work. Both are thunderbolt monitors so I can connect my Macbook with just a single cable. At home it lets me easily switch between my PC tower to my Macbook just by changing inputs.

It occasionally is finicky with changing inputs, but the color calibration is extremely good out of the box (I calibrated my 95 with a Spyder and it was 95% of the way there)

If you want a display for both platforms IMO it’s the way to go. Great for gaming and movies as well.