What is the difference between the "ME" line of AZBox and the others such as Premium and Ultra? Looks like the ME types don't have WiFi. And they have the tuner built onto the board whereas the other have sockets into which you plug your tuner(s). But both lines can do DVB-S2 Mpeg4 HD and just about any other type on the satellites, right? Anything else I should think about? Can anyone give me the rundown of differences? Thanks.