StuffIt has drained my last ounce of patience, but its ability to make special-purpose pre-configured compressor droplets, in the Deluxe version, is still very handy. (eg. zip-with-encryption ... sitx-without). BetterZip would be the PERFECT compressor if it offered similar functionality.

One option is to make BZ Apple-Scriptable, allowing users much greater flexibility, but I suspect this is no simple path for the noble programmer!

cv