"Which one is the best" vs. "which one the best is"
"Which one is the best" is obviously a question format, so it makes sense that " which one the best is " should be the correct form. This is very good instinct, and you could even argue that the grammar is good, but at best it's unnatural.

word choice - "his best-seller book" or "his best-selling book ...
Best selling author Gary Chapman introduced the concept of love languages in his New York Times Best Seller book “The Five Love Languages..."; Piketty, the author of the best-seller book 'Capital in the Twenty-First Century', is a faculty at the Paris School of Economics.

articles - "it is best" vs. "it is the best" - English Language ...
The word "best" is an adjective, and adjectives do not take articles by themselves. Because the noun car is modified by the superlative adjective best, and because this makes the noun car definite in this context, we use the. It is best not to do something. Here, we have the adjective best, but this adjective is attached to no noun.

Way of / to / for - English Language Learners Stack Exchange
The best way to use "the best way" is to follow it with an infinitive. However, this is not the only way to use the phrase; "the best way" can also be followed by of with a gerund: The best way of increasing morale in the workplace is to care about the workers. The best way of preventing a heart attack is to both exercise regularly and eat well.

plural forms - It's/I'm acting in your best interest/interests ...
have someone's best interest (s) at heart to make decisions based on someone's best interests. I know she was only doing what would benefit her, but she said she had my best interests at heart. And from Oxford Dictionaries, it seems that interests is generally more common. in the interests (or interest) of something 2 For the benefit of:

"Best regards" vs. "Best Regards" - English Language Learners Stack ...
I have been told that I should use "Best regards" in emails. However, I also see many native English speakers using "Best Regards". I'm confused which is correct.

To you vs for you - English Language Learners Stack Exchange
I want to know the correct usage "for you" vs "to you" for example: Congratulations for you too. Congratulations to you too. Which sentence is correct?

expressions - "it's best" - how should it be used? - English Language ...
It's best that he bought it yesterday. or It's good that he bought it yesterday. 2a has a quite different meaning, implying that what is being approved of is not that the purchase be made, but that he is the one to make it. 3 "It's best (if) he (not) buy it tomorrow." is not a subjunctive form, and some options do not work well.

"fits" or "suits" my needs? - English Language Learners Stack Exchange
In a formal letter, what kind of sentence could I write? The programme perfectly suits my needs. The programme perfectly fits my needs. EDIT: According to a dictionary the phrase with "fits" makes ...

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