I understand that, but I have a nexus 5 and I find the quality to be pretty good for the price especially after I RMA'd it when I first got it as it had dead pixels and terrible backlight bleed, and the replacement does not have those things. Its especially good if you're not comparing it to anything.

The nexus 5 is like the Nissan GTR, it's variable whether you get one with a good display or not. (Nissan GTR having a hand built engine which varied in HP)

Come to think of it my Xperia Ray had more vibrant colours than the nexus 5, so I see where you're coming from.