I haven't been brave enough to try this one yet.

Any support thread as long as that one has...I tend to avoid.
I know Joe (The Bar Keep) is using it, but he tells me it's still glitchy on the shipping amounts and his orders don't show up in the Zen Admin section.
I did notice the other day they have a new version now, so maybe those bugs have been worked out.
If you try it Bob, let me know how it works out for you. I would love to add it to my sites.