The P5 screen extender is my third set of portable monitors from Tutt and I might like this one the best! The set-up is super easy and the screen is quite big, due to the very thin frame on the top and sides. I also have the S6 and the S2 mini.
I teach university courses online and my job requires that I have numerous windows / applications open at the same time: Submitted assignments, assignment instructions / requirements, class rosters, browser tabs to access the university library, Statistics Canada and other websites, and my work email. Having an external monitor in addition to my main monitor - a 24 inch screen - makes my work so much more pleasant.
Have a look at how cool my home office setup is! In the bottom right corner, you see a piece of my iPad, which I use to make manual remarks on submitted assignments. It also functions as a third monitor via Bluetooth.
When I am on the road, I use my Apple laptop instead of the desktop but otherwise my setup is the same. I actually do take one of the two S6 monitors with me. I gave the other S2 to my wife who is thrilled about it.