Just received mine yesterday, 4 days ahead of the estimated delivery date. It's a beautiful phone. I updated to Lollipop last night. I will be giving it a test drive over the next few days. I'm on the AT&T network, and the Pure Edition is working well. I get 4G LTE. It's very responsive. I like the display a lot. I prefer it over my previous N5. I like AMOLED screens over LCD's.
It took some a little work to get Smart Lock working. I had to uninstall the Google Play Services updates, and sideload 6.5 to get it working. I like Active Notifications, but I prefer Glance on my Windows Phone. The response of the phone is very good (no lag).
I wish there was an IR blaster, user replaceable battery, wireless charging, and shock/water resistance. That would make it near perfect.
I will test out the camera in the next few days as well as condition the battery.