Update: I went with the Jenix Model 804 DRO.
Pro: bundle was very inclusive; a surprising number of brackets for different mounting scenarios; large count of allen head bolts/washers/nuts in multiple sizes; superb packaging; durable (dropped a glass scale on concrete floor w/o shattering the scale)
Con: does not accommodate axis readout coordination when moving from mill to lathe on my 3-in-1 ShopMaster; Jenix support did not have a work-around