Path Finder has more features than TotalFinder, since Path Finder is a full-fledged Finder replacement, while TotalFinder just adds tabs and some other small stuff. However, I like TotalFinder a little bit better because its tabs are styled exactly like tabs in Google Chrome (a personal favorite), so I'm actually used to working with it.
Path Finder also has tabs, but I cannot remember the last time I actually used the feature unconsciously. The design is just too clunky. I'm willing to sacrifice a few features in Path Finder (that I barely use anyways) for the better usability of TotalFinder.