Redmi Note 2 is the best phone I would say as per its price.The user interface(UI)is so developed that even a person with zero android knowledge can use it very user friendly way.
The phone’s UI is so optimized that it just never gets hanged. The camera quality is good.But if you want best go for latest phones of Xiaomi on MiStore app. The inbuilt Security app in this phone is best app I would say, because thats the only app that keeps it virus free and optimized.The cleaner included in this app is way better than the other cleaner apps available on play store. In this phone you don’t need to download the scanner app or QR scanner app as it is already included in this phone.