I strongly prefer having only one screen no larger than 19 inches with a pixel density between about 110ppi and 150ppi. Why? Neck and eye strain with all other

I strongly prefer having only one screen no larger than 19 inches with a pixel density between about 110ppi and 150ppi. Why? Neck and eye strain with all other configurations I've tried. Also small font sizes really shine when the pixels are that large.