No computer technology choice is right for everyone. All depends on the problem to be solved. Take the question of whether to have more monitors or fewer.
Some people feel their monitors give them too little screen area. They may move to to double monitors, as I use at work. That allows having, say, the text of a court decision in a research window, and the text of a brief in another, or the text of a model contract or your notes in one and a contract being drafted in another. So you can see both just by shifting your gaze, rather than shift from one pane to another. (Larger and widescreen monitors are another option. But two 4:3 LCD monitors will cost less than a single 16:9 monitor with screen area equal to the two 4:3 monitors' summed areas.) People who work with a lot of text in multiple documents, like lawyers, often find it useful to have two or more monitors on a single PC.
Other people may keep two or more computers running at a time doing different jobs. But these people lose a lot of physical space when each computer needs its own keyboard, video monitor, and mouse. And often, the work being done on the second or additional computers doesn't need regular checking; maybe only being looked at once a day. Many people with this issue move to KVM switches, that let them keep just one keyboard, video monitor, and mouse, for two or more computers. Remote session control is another option for solving this kind of problem, but either way, the goal is to have fewer monitors than computers.
If you go with multiple monitors, try to keep their displays as similar as possible in brightness and contrast levels. Your eyes will feel better.