Fran: I think the paragraph in your link is the reason not to.
*-*-*-*-*-*-*-*-
"NEVER use a three prong to two prong AC adapter to fix a ground loop problem. These devices are meant to provide a safety ground (via the cover plate screw to a grounded outlet) in the event a three prong plug is used with a two prong outlet. It is always best to lift the ground safely at line levels."
*-*-*-*-*-*-*-*-
"NEVER" seems pretty clear to me. I understand the "after all these years why change" makes sense coming from a guy still using his G1000.
I'll go with the box. I'm just not sure why not to get the ART DTI over the Ebtech.