Only registered members can see certain pages?

Hello!

I’d like to restrict certain pages, so that only registered members will have access to them and others get a message saying something like “only for members, register or login”. My blog would still be open for everyone, though. So, I’m wondering what would be the best way to achieve this? I found one plugin (https://17thdegree.com/archives/2005/07/01/wordPress-plugin-page-restriction/), but it’d be great to see some others (if there are any) and compare them.

Thank you very much!