I am using one plus 5 for last 2 months. Its amazing. Very much fast. Memory ( RAM) management is incredibly good. Beast for gaming. Only the concern is battery. It can give you a whole day with 4G Volte active. But they solved the problem by giving dash charger. It gives almost 80% boost within 30-35 mins. Overall it is very nice phone. Looking of the phone is also premium. Oxygen OS is very much like Stock ROM with lots of customisation.
In a word: Best phone within its price range.