Big Surprise, Big Phone

Thinking of surprising my girlfriend with an iPhone 14 Pro Max, she’s currently using iPhone XR. I think she’d really like this upgrade. But you think pro max would be the right one? I’m a little confused between pro and pro max, as she doesn’t really care about the screen size and isn’t a heavy user.
Also saw the Protect+ plan for damage online. Seems handy, but wondering if it’s worth the extra scratch? What do you guys think?