What serial numbers does yours start with?
I placed my first order the very moment they appeared on Google Play. The most recent N5 is only ten days old.
Both are Black 32GB models
#1) serial begins with: 540
#2) serial begins with: 543
I have a jewellers loupe which I used to inspect them very closely, the screens are both perfectly flush, ports and buttons are excellent. The buttons on the newest are very slightly rounded on the ends, you have to look hard to notice. Same great tactile experience, thus I have no preference. Not enough difference in speaker holes to be a make or break decision for me.
I'm picky & outspoken, so I'd be the first to mention any differences of consequence.
Both are very fast, fun, and completely stable. My tiny cramped iPhone 5 has nothing on the Nexus 5, in fact I greatly prefer the soft touch, grippy back side of the Nexus. There's nothing like the beautiful displays. Only my Note 3 has such a gorgeous display.
Having installed the Qualcomm BatteryGuru App, I'm getting insanely great battery life. Watching as it turns the Wi-Fi on and off as needed is a fascinating experience, not because it's automatic, but because it only does so when I'm entering a new Wi-Fi zone that in many cases I'm not aware of till it occurs.
Personally I couldn't be happier.
Edit:
I've got everything turned on, screen brightness at 80%. Heavily used all day (web, email, calls, etc,) when traveling I easily get 16 hours. Before installing BatteryGuru, 10-12 hours. Non-travel days yet lots of usage, I have approx 45 to 50% remaining at days end.
