Nope, don't even think about it if you have S7.
OP3T is good value for money, ONLY if you are getting it cheaper than S7 or its rivals.
OP3T strength is price to performance compared to other flagships, but if you have to pay more than S7 to get it, it's useless.
Moreover, OPPO and One Plus are inter related, both highly focused on advertisement and hype. They pay a lot to make people buy Oppo and One plus, that's why everywhere on YouTube will be like, OP3T, OP3T and in local market, OPPO, OPPO etc.