Hustler and Big Dog are now owned by Stanley Black and Decker which also owns MTD, Cub Cadet, Troybilt, so I wouldn't be surprised if that line doesn't either get rolled into the Cub Cadet dealer line or spread to the full service dealer network.
Dixie chopper is owned by Alamo Group the company that makes Rhino equipment. They just announced within the last couple months that there had outgrown their current location and had just acquired the old factory location and will be moving production back into the original location. They used to have a nice banked oval track that they test ran the mower on.