Because of our plan it actually wasn't all that more expensive to get the S24 over the S23, which is what I went into expecting to get. The S24 had come out literally a couple days before we went in so they had a bunch of deals on it. Dunno if those are still going on.
I don't know much about the actual differences between the specs (I was completely fine with my old one outside of the battery) but I was surprised to find out that the S24 doesn't have a phone jack so they went with the iPhone route on that. If that matters to you.