(one) would (just) as soon (do something)

One would like to or would rather do something. Often used when one is faced with several options. It would be nice to live somewhere else, but I would just as soon go to a local college and stay close to my family. I know everyone is eager to go out tonight, but I'd as soon stay home, to be honest. I would just as soon cancel this party, but my husband has been looking forward to it all week.

he, she, etc. would just as soon do A (as B)

somebody wants to do one thing as much as another thing; it does not matter to somebody what they do: Susan can have my ticket for the show. I’d just as soon stay at home (as go out) anyway. ♢ He’d just as soon have pizza as a hamburger.