The new Nexus 5 might be missing some features that the Moto X have while the specs on the Nexus 5 is better. So it really is if you want the features of the voice commands and maybe a smooth ride, which it really is smooth, my friend have one and love it despite the mid range specs, and the Nexus 5 with faster updates and better specs.
Nexus 5 Specs:
4.95-inch 1080p HD display
2.3GHz Snapdragon 800 processor
2GB of RAM
1.3MP front-facing camera
8MP OIS rear camera
LTE Bands 1/2/4/5/17/19/25/26/41
2300 mAh battery
The specs are the highest specs possible for a phone right now, so if that isn’t mind blowing what is? And 4.4 is a pretty major update, biggest update since 4.0
The Nexus 5 is now on sale, $349 (16GB) for AT&T, T-Mobile and Sprint. The 32GB version prices in at $399.