Anyone compare / contrast these guitars? The Legacy and S500 look almost identical to my untrained eye. The Commanche obviously uses those Z3 pups which scare me because I doubt they could ever be replaced, but they also have really good reputation as well (or so the internets say There is an S500 on the bay that I'm reviewing with a humbucker in the bridge, but I've never seen that config before. It looks like a mod - anyone have any info on something like that? It's the only one I've ever seen. Might be cool.