decide between

decide between (someone or something)

To choose someone or something when given two options. Holly and Jack are both such good candidates for the job that I'm having a hard time deciding between them.
See also: between, decide

decide between (someone and someone else)

 and decide between (something and something else)
to choose one from two people; to choose one from two things. I could not decide between Tom and Wally. We could not decide between those two.
See also: between, decide