If you're a Windows user looking to reclaim disk space, choose WinDirStat. Its treemap visualization quickly shows you what's consuming your storage, and being completely free and open-source, it's perfect for those who prioritize transparency and lightweight solutions. However, be prepared for a dated interface and slower initial scans on very large drives.
On the other hand, if you want a modern file management experience and features like tabs, dual panes, and tagging, go with Files. It offers a sleek interface that's actively maintained, appealing to solo users seeking an upgraded alternative to File Explorer. Just keep in mind that it's still Windows-only, and you might encounter some rough edges in preview builds. Don't choose it if you need cross-platform support or advanced features like scripting or FTP.