It's quite possible that you can still get better viewing angle. I sit in front of it. What interests me? My old monitor came to an average of 50-60 watts consumption. If you wonder how much the Dell needs, here's the answer: Just there are 16.4 watts.
So that I may save about 50 euros a year. This is in frequent use. After 2-3 years it is paid by itself. If you use it less, which is perhaps also last 5 years.
What's next then I can not say yet whether it be newer and more fuel-efficient monitors are in the future, but having to be increased rather than decreased, I do not think the times. My Samsung, I will now discard. The Dell I find better. It has to do what but also in 5-7 years. The Samsung has served me well and whether the Dell just is old, we will only see more.