We really want to get this thing to you guys as fast as possible, but unfortunately it's the way things went for us this year, and it got delayed longer than we wanted it to. You will likely be able to get one through Sweetwater or other independents late this year, since it always takes a little longer for things to make their way into Musicians Friend and Guitar Center. As for the XLR on the pedal, it's just a different way of hooking things up. It works just like a normal cable to a foot switch, but has a little bonus of snapping in place. To answer the other question, the two amps do sound identical, just with more features on the Armageddon. It has the ISP Decimator, a 3rd channel, different cosmetics, and fully adjustable mid range contour instead of preset switches. It will really just come down to seeing if you just want a simpler amp, or if you like having the cooler features on it.