The word(s) "best" appears 257 time(s) in 234 verse(s) in Quran in Abdullah Yusuf Ali translation.

(181) "Such are Our Bounties: whether thou bestow them (on others) or withhold them, no account will be asked."

(182) When some trouble toucheth man, he crieth unto his Lord, turning to Him in repentance: but when He bestoweth a favour upon him as from Himself, (man) doth forget what he cried and prayed for before, and he doth set up rivals unto Allah, thus misleading others from Allah's Path. Say, "Enjoy thy blasphemy for a little while: verily thou art (one) of the Companions of the Fire!"

(183) Those who listen to the Word, and follow the best (meaning) in it: those are the ones whom Allah has guided, and those are the ones endued with understanding.

(184) So that Allah will turn off from them (even) the worst in their deeds and give them their reward according to the best of what they have done.

(185) Now, when trouble touches man, he cries to Us: But when We bestow a favour upon him as from Ourselves, he says, "This has been given to me because of a certain knowledge (I have)!" Nay, but this is but a trial, but most of them understand not!

(186) "And follow the best of (the courses) revealed to you from your Lord, before the Penalty comes on you - of a sudden while ye perceive not!-

(187) And to every soul will be paid in full (the fruit) of its Deeds; and (Allah) knoweth best all that they do.

(188) "And preserve them from (all) ills; and any whom Thou dost preserve from ills that Day,- on them wilt Thou have bestowed Mercy indeed: and that will be truly (for them) the highest Achievement".

(189) Those who dispute about the signs of Allah without any authority bestowed on them,- there is nothing in their breasts but (the quest of) greatness, which they shall never attain to: seek refuge, then, in Allah: It is He Who hears and sees (all things).

(190) He set on the (earth), mountains standing firm, high above it, and bestowed blessings on the earth, and measure therein all things to give them nourishment in due proportion, in four Days, in accordance with (the needs of) those who seek (Sustenance).