When I got this phone it looks a lot similar like nexus 6 . Just a little smaller in size compared to nexus.Even though it has a two gigabytes ram still it performs well with heavy applications.
But when many apps are opened at once some times it may give frame drops and occasional lags still one of the best contender in mid range devices.
The camera quality is phenomenal those 20 megapixel work great in taking some good quality pics.Also the audio is great since they are front facing.Worth buy if you are an android fanboy.