YOU SAID:

who thinks they're the best

INTO JAPANESE

自分が最高だと思う人

BACK INTO ENGLISH

The person I think is the best

INTO JAPANESE

最高だと思う人

BACK INTO ENGLISH

The person who thinks best

INTO JAPANESE

一番考える人

BACK INTO ENGLISH

The person who thinks the most

INTO JAPANESE

最も考える人

BACK INTO ENGLISH

The person who thinks most

INTO JAPANESE

最も考える人

BACK INTO ENGLISH

The person who thinks most