The two monitor setup might be really flexible and helpful if you do a lot of side-by-side stuff. It's amazing how many document handling possibilities there are using two monitors connected to the same computer.
I'm no expert but I'm sure YouTube videos exist that can open many doors of dual monitor use. Gooluck!
The ability to zoom separately with two monitors can be useful on occasion, but for most work I would prefer a single *large* extra-wide monitor. Some years ago, I had two 1920x1080 (FHD) monitors on my desk at work. It was better than having only one, but you can’t really split a window across them because of the gap.
Now, at home, I have one 27” 2560x1440 Dell U2713H monitor. It has pretty good resolution and excellent sharpness and color, plus *lots* of adjustments (e.g., color temperature). I would like something with more resolution (3840x2160 or better), and a physically bigger screen. Dell has a 43” one of those, but it costs around $1000 and isn’t as adjustable as my current one. Plus, I might have to upgrade my graphics card (it’s an older Radeon HD 6770).
My wife, on the other hand, has a very nice 38” 3840x1600 Dell U3818DW, which she uses for video editing in Premiere Pro. It has the same pixel width but more pixel height than two 1920x1080 screens side-by-side (which she used to have) and doesn’t have the gap. Even so, there isn’t quite enough screem space, so it would be nice to have something still wider (and maybe taller). Or maybe two U3818DWs side by side. But then “you’re gonna need a bigger desk”.