Should a kitchen faucet pull out or pull down?

We want a new trendy faucet for our kitchen, the type that has a built-in spray head.

But, I’ve noticed that some of these faucet spray heads pull out of the faucet body, and some heads pull down.

Is there a reason to choose one type of these faucets over the other?

I prefer down - it positions the head over the basin even when you aren’t using it by hand.