pre flop raise amount

[drunk.hole]

Say I play 25NL. Can anyone explain to me the difference for making your standard preflop raise a certain amount when you are the first raiser and there are no limpers yet?

Some people say 75cents.Some people 85cents. Some people 1.00$

Its my theory that if you raise 75cents its better than 85cents or a dollar. Because if they are going call 75cents they will call 1 dollar. But considering all the times you have to shut down post flop, you would be saving yourself money long term by raising to 25 instead of a dollar.

If I am wrong please let me know, and explain why.thank you