So after discovering the bad news of the 4,5, and 15 getting discontinued, I immediately bought one of each; well now that I've seen how awesome they are I want to order another one of each as a backup haha. The big question is, which one FIRST? I plan to get them all but am leaning towards a spare 15 to start since it's so cheap at the moment. (Though I could use the logic that I should get a 4 or 5 first since it'll be easier to spend the money on the 15 later)