At any given time, anyone of the sponsors may have the best fish available. Some import, some breed, some do both. I'd suggest you look at the current shipments lists from the various sponsors and choose the discus you like best. Review their Itrader responses as well. I would try and look at the most current inventories first.
Be careful in your choice. Don't by on a whim. It is best and wait until you see some you really want. Don't regret your choice. Be selective.
Mat