Volume & Power Key - Once you get used to it you will find it better than conventionally placed keys
Processor - Fast speed. All apps work great. No lag in Subway Surfers.
Screen - Amazingly good. Thin bezel makes it look really good.
LG Apps - No redundant apps like Samsung. All apps included are very useful.
Performance -> Powerfull processor, can handle almost every task
Gaming - It runs heavy games like asphalt and fifa without any issue
Camera - 13 MP Camera is good enough .
No need to install any app for changing theme or keyboard layout or theme and fonts its all built in u can download your favorite ones.
Nice sound quality.