If you're a Windows power user looking for a set of versatile tools to enhance your workflow, choose Microsoft PowerToys. Its variety of utilities, like FancyZones for window management and PowerToys Run for quick app access, make it invaluable for anyone who relies on keyboard shortcuts and productivity enhancements. However, if you're primarily interested in a single-purpose tool to analyze and manage disk space, then WinDirStat is the better option. It provides a clear visual representation of your storage, which is great for reclaiming disk space, although be prepared for a somewhat outdated interface and slower scans on large drives.
Opt for PowerToys if you thrive in a multitasking environment and want an array of utilities at your fingertips. On the flip side, if your focus is solely on resolving storage issues without the need for additional features, WinDirStat would serve you well, particularly if you prefer a lightweight, no-cost solution.