I really Like Path Finder. I have been using it for several years. I think it use to be called
SNAX.
It always had better functionality than the finder. The biggest knock was that it was slow and used a lot of system resources. I used it as Finder helper rather than replacement.
It still suffers from feature bloat. However, the latest version is so much faster that I don't worry about all the features I don't use, and I have started using it as a finder replacement. You never realize how wonderful a clean desktop is until you have one!
It now has tabbed windows. Tabs in Path finder does for file management what tabs in Safari does for Internet browsing. If you want to move a file or a set of files, you can open different directorys in different tabs. You can then drag the files from one tab to another or park the files on the "shelf" and switch tabs to complete the transfer. It works brilliantly.
The only significant knock I have against it is that its default font is too small.
However, whenever I work on a foreign Mac, the utilities that I miss the most are Launchbar, Path Finder and Default Folder