The word(s) "best" appears 206 time(s) in 195 verse(s) in Quran in Mohsin Khan translation.

(171) We know best what they say. And you (O Muhammad صلى الله عليه وسلم) are not the one to force them (to Belief). But warn by the Qur'an; him who fears My Threat.

(172) Enjoying in that which their Lord has bestowed on them, and (the fact that) their Lord saved them from the torment of the blazing Fire.

(173) That is what they could reach of knowledge. Verily, your Lord it is He Who knows best him who goes astray from His Path, and He knows best him who receives guidance.

(174) And to Allah belongs all that is in the heavens and all that is in the earth, that He may requite those who do evil with that which they have done (i.e. punish them in Hell), and reward those who do good, with what is best (i.e. Paradise).

(175) Those who avoid great sins (See the Qur'an, Verses: 6:152,153) and Al-Fawahish (illegal sexual intercourse) except the small faults, - verily, your Lord is of Vast Forgiveness. He knows you well when He created you from the earth (Adam), and when you were fetuses in your mothers' wombs. So ascribe not purity to yourselves. He knows best him who fears Allah and keeps his duty to Him [i.e. those who are Al-Muttaqun (the pious. See V.2:2)].

(176) Then he will be recompensed with a full and the best recompense.

(177) And what is the matter with you that you spend not in the Cause of Allah? And to Allah belongs the heritage of the heavens and the earth. Not equal among you are those who spent and fought before the conquering (of Makkah, with those among you who did so later). Such are higher in degree than those who spent and fought afterwards. But to all Allah has promised the best (reward). And Allah is All-Aware of what you do.

(178) Race with one another in hastening towards forgiveness from your Lord (Allah), and Paradise the width whereof is as the width of the heaven and the earth, prepared for those who believe in Allah and His Messengers. That is the Grace of Allah which He bestows on whom He is pleased with. And Allah is the Owner of Great Bounty.

(179) So that the people of the Scripture (Jews and Christians) may know that they have no power whatsoever over the Grace of Allah, and that (His) Grace is (entirely) in His Hand to bestow it on whomsoever He wills. And Allah is the Owner of Great Bounty.

(180) He is Allah, the Creator, the Inventor of all things, the bestower of forms. To Him belong the best Names. All that is in the heavens and the earth glorify Him. And He is the All-Mighty, the All-Wise.