I don't know what the parent poster prefers, but i find the 4/4.5 screens a bit too small and anything larger then 5.5 a bit to big. 5 or 5.1 or 5.2 is my sweet-spot in screen size. Its just what fits my hand the best. Im currently looking at changing from the S7 Edge that i find a little too big and was looking at the XR and 8 in the store yesterday. The 8 fits exactly what i want in phone size, and im having a hard time finding good android phones with good battery life at that size.

up until a couple of months ago, apple was the only company selling a proper 4-inch smartphone.