RE: i have 15k suggest a good phone
Redmi note 3(12k),One Plus X,Samsung J7
These are my top three choices,but I would suggest you to go with Redmi Note 3 as it has a new processor,More RAM,gets more Antutu Benchmarks than any other phone in same segment,Finger print Lock and many more
I personally do not like Xiaomi but there is no better phone than this at present in this price