I am currently on a pinch

I went to the Sony store today and had a play with the new prs 350 and 650. I don't know if its just me but the screen quality on the Sony seemed to be better than my K3. I am sooo confused now. Return the K3 and get the Sony or ignore the difference in screen quality and stick with the K3. I read quite alot so screen quality is very important to me.