to me 4 and 4.5 is too small. The basic reason for that is becouse the text is too small. I want to be able to open webpage and read any text while having the phone/hand resting in my lap(without zooming). its so funny watching poeple with phones with smaller screens than 5.5 having their phone 20 -30 cm fom the head to be able to read some times even less

you dhould be able to easily read active topics here att tmo (from 50 cm distance)without zooming. then the screensize is perfect and you can execute tasks faster because you dont have to zoom all the time.