My daughter down in Texas presently has a Hopper 3, five Joey 2s, and one Wireless Joey. WJ is the only purchased item. She is wanting one more Joey either wireless or a Joey 3. What is the maximum Joeys limit? Going to go visit in June and was thinking of purchasing another Joey for her if DISH will allow seven Joeys. Also, does anyone know if DISH will swap out her Joey 2s for Joey 3s? If so, what would DISH charge for the upgrade? Thanks for any help.