I picked up my Nexus 5, it came with a free Nexus 7 tablet as well. Go me!
The phone is noticeably lighter than my older Galaxy Nexus (i.e. Nexus 3) but the display is much brighter and more vivd. In fact it's a lot more vivid than the Nexus 7 display. No gripes so far.
On a side note: This is my first 4G phone. I didn't realise just how quick 4G was. It downloaded it's initial 140MB update in a couple of seconds. I turned my head for a moment and when I turned back to check it it was installing it.