Having seen a few of these bent and beaten now, I would think a 172 is a fine place to be in an unfortunate situation.
They're not huge, but they're pretty damn solid for how big they are, and they do the right things to protect those inside them.
BUT They're 20~ish years old now, and safety tech has come quite a way in the meantime. If safety is your significantly primary concern, go something newer. If there are other considerations (like how often the kid(s) will be in it, financial, timing, fun-factor) then you're the only one who can really arbitrate on what the best option is.