Just found this thread. Never have seen a Grandy in person.
Navigator is the high end ESP, the grass roots I saw were MIC. Edwards , as far as I know are MIJ... they just relaesed a line of very nice looking, in the catalog, strats and teles... Duncan pups alder and ash bodies etc. Will reprt when I can get my hands on one or two. I agree there seems to be a link between Zephry and Bacchus, which are part of the Deviser corporation along with Riverhead. I own several Bacchus strats and teles along with a Les Paul jr type... all are very well made, and I swapped pups in some for Van Zandts and Duncans and they are now top notch guitars. Some interesting links here, I`ll have to check on them later after work. Gotta go... bye.