I'll go with the candidate I'm used to.
I get that this is colloquial, but, c'mon. Ending a sentence with a preposition?
However, is the alternative correct?
I'll go with the candidate to whom I am used.
It seems to me that the meaning of the phrase 'used to' is tied explicitly to the word order and actually doesn't have meaning apart from its tradition, and breaking it up would destroy the faux meaning. I can't think of any other cases where the verb 'use' takes the proposition 'to.'
Is that correct? If not, is there another way to do it without ending a sentence in a preposition?