I prefer Wiztree (link below), especially on systems with much larger disks. Since Wiztree works by scanning the MFT it's about an order of magnitude faster than Windirstat or Treesize.
http://antibody-software.com/web/software/software/wiztree-f...
http://antibody-software.com/web/software/software/wiztree-f...
> Since Wiztree works by scanning the MFT it's
> about an order of magnitude faster than [...]
> Treesize.
That's misleading - TreeSize also works by scanning the MFT.