If you are a solo user on Windows looking for a modern file management experience, choose Files. With its sleek WinUI 3 interface, tabs, and dual panes, it offers features that surpass File Explorer, making file navigation efficient. However, be aware that it's only available on Windows and may have occasional rough edges due to its status as a preview build.
On the other hand, if you require a flexible note-taking and knowledge management tool that works across multiple platforms, go for Obsidian. It's ideal for personal organization and project management, providing robust customization options and data privacy through local storage. Just be prepared for a learning curve, as it doesn't support AI features or real-time collaboration, making it less suited for team efforts.