Amaray 1 versus Amaray 2



hey i finally find out where i can get amaray dvds. at

Anyway i have a question about the differences. i dont know which to order, either amaray | or amaray ||. i know that with amaray || you can insert a second sleeve for two movies but al i want to know is that is the hub different, is the case made different?
At sleevetown amaray 2 cases are cheaper and i dont know why. would that mean they are not as durable?