Nobody yet knows what phones will be introduced the remaining 11 months of 2024. So you question can’t be answered.
Moreover, it depends on what you want to do with it. Some phones are better in this, others are better in that. That’s the second reason your question can’t be answered.
The best phone in 2024 is “subjective” and too early so far to predict. Personally, I’ll stick with last year’s Samsung Galaxy Ultra 23. It suits my needs just fine and unless it was lost or broken, I have no need to replace it. Will the Samsung Galaxy Ultra 24 be even better? Still too early to predict, but I really don’t care and I can’t afford to replace my current phone at this time anyhow.