What is the best way to create a website with sections in Drupal?

Users need to be able to add, remove, and nest pages fairly easily. Pages added to a section should have an appropriate URL, like "/[section name]/[page title]".

This seems like a straightforward task, but I can't find the right combination of tools to do it. Subsite comes close, but for some odd reason, doesn't set up the correct content paths. The closest I got was creating a book for each subsection, but that feels like I'm using the wrong tool for the job.

Edited with my solution: I used organic groups with pathauto. I set pathauto so that pages in groups had URLs that were of the form [group path]/[page title].