I used oppo neo3 and I faced so many issues like phone is hanging, memory is full also a sudden switch off/on.
oppo neo3 has good sound quality also there is functionality that blind people can use it.
Also design is good .Oppo neo3 product gives you guest mode and owner mode functionality.
Oppo neo3 has RAM 1 GB which is quite problematic in future also internal memory is only 4 GB.
One more thing is oppo has their own color os which run on lollypop version still.
so I don’t think it is worth of that much money.