If you're a solo user on Windows seeking a modern file management experience, go for Files. Its tabbed and dual-pane layout offers a streamlined approach, enhanced by tagging features that File Explorer lacks. It's ideal if you prefer an open-source solution that's regularly updated, but avoid it if you need cross-platform support or advanced functionality like scripting or FTP.
On the other hand, if you're a power user who thrives on efficiency, Microsoft PowerToys is the better choice. With a collection of utilities designed to enhance your Windows experience—like FancyZones for window tiling and PowerToys Run for quick application launching—it's perfect for boosting productivity through keyboard-driven workflows. However, steer clear if you're looking for a single-purpose app, as it doesn’t specialize like Files does.