There are many flagship phones, their configuration is almost equal to this and price is also in same range( leco, Xiomi, currently not available in india) . But just configuration on paper doesn’t work. It all depends on speed and experience/feel which you get. I mean One Plus 3 is not just the mobile having very high configuration, it do delivers flag ship phone experience, that is great thing about this phone.
If you want real flagship phone like experience in around 25k to 28k, blindly go for it. No second thought, just One Plus 3.