Path Finder 7
Path Finder 7 has an updated interface and some interesting new features such folder comparison.
Update (2014-09-15): Gabe Weatherhead:
If you’re struggling with using the Finder because it feels too limited then the full purchase price of $40 is probably worth it, just like it was with Path Finder 6. I don’t think PF7 is a particularly impressive update but the overall application is terrific.