I will have to say that this is certainly the best unarchival package I've seen for Mac OS X bar none. I will definitely rate this 5 stars as I'm sure it will improve in the areas that currently need work that others have delineated. This is excellent and clean software that works as one would think it should after you see it actually "do its thing."

Definitely give this a chance. It would be nice to see some more robustness and even see the developer create "The Archiver" as I'm sure it would be outstanding.