Here is my impression. Received phone today. It feels big at first, very big compare to my Nexus 5. My first thing to check was yellow screen. Well, I could not see anything yellow and my device build date was July 2.
Started playing with it and noticed unresponsive touch screen. This problem went away after I flashed latest Liquidsmooth rom. Dont have other problems to report.
Yes, this phone does not feel as premium as HTC M8,no aluminum and it does not have awesome speakers.But at the same time it feels solid, it has great build quality and its not worse than my N5. Basically to me its just a little step above N5 due to slightly better speakers and much better battery life. I do not see any difference in speed. N5 with custom roms is just as snappy as OPO nevermind the older processor. Overall it it what I expected, I am pretty happy with it for the price paid and I will keep it.
I think its a little too big for my liking, even though I am 6.2 guy with big hands. If next Nexus will be 5.2 with adequate battery I might switch, but might not if I get used to this thing.