Pathfinder is a rather good alternative to MacOS X's Finder (as long as you like the Explorer style - which I do not, but that's beside the point), and still faster than it.

Unfortunately, PF suffers from being overburdened with far too much features and options that make it appear cluttered and complicated. Less would have been far more. Additionally, there are a couple of (usually minor) bugs that haven't been fixed for a while and the German localisation is riddled with typos, misspellings and errors. This lessens the overall appearance of quality quite a bit.