I like the 23" widescreen size because the corresponding vertical screen height of just over 11" allows a standard full 8-1/2" X 11" page to be shown actual size.
I am also very pleased with my Acer X233H 23", and there are many other equally good ones from Samsung, Dell, ASUS and others. For day to day use they are just fine. If you do photo editing work you will probably want something better, and if you play games you will probably want something with a faster (than 5mS) response time.
Steve