I was looking for a beast budget smartphone and were many choices and from that I chose Oneplus 3 and I do not regret a single bit also.
First of all the snapdragon 820 is a beast and coming with 6GB of ram no one stand a chance against it. The oxygen os is far better than cynogenmod os and more stable. The display of this phone is great and sharp.
There are no other phone in this price range that are good but this is the best. If xiaomi whould have launched mi5 pro in india then it would got some competition but currently there is no match.
I recommand anyone who asks me to buy Oneplus 3 over any other phone.