Oneplus is america based company.
Oneplus 3 is best for money because of its massive feature like it has 5.5 amoled screen with 16 million colours.
Its run on android 6.0.1 which gives a super android experience . It having 6 Ram and 64 gb internal memory. Onplus come with protective gorilla glass 4 which protect your phone better than any other and its also have finger print sensor with one or more finger print. The primary camera is of 16 megapixel with led flash and secondary camera is of 8 megapixel. In my opinion oneplus 3 is best for money.