Whatever you call it, the Nexus 5 behaves as Google wants it to, not as LG, AT&T, T-Mobile nor anyone else wants it to. Phone Scoop has an in-depth review of Android 4.4 KitKat available here.

This "pure" Android phone designed to Google's specs is based on the LG G2 and has many improvements over the Nexus 4, including 5" full HD display, 4G LTE, and a Snapdragon 800 processor.

But alas, the firmware is locked down. Enter the NexMon project. If you’ve got a Nexus 5 phone with the Broadcom BCM4339 WiFi chipset, you’ve now got a monitor-mode, packet-injecting workhorse ...