I dont think anyone would be "crazy" to learn on discontinued equipment.? I work on discontinued equipment all the time,? Stuff we havent even finished installing yet is discontinued before its signed off. Its crazy how fast things come out and then are gone. You can always learn the basics on older equipment...Not to mention that if you are in the business, many customers will call looking for work to be done on their discontinued hardware.? I have jobs that i need to start now that still use quickmedia.? Even if the system isnt ethernet, you can learn alot about relays, making IR files, serial control.? very important basics that you will always need in your tool belt.