I have been doing some more research, I still cant tell the difference between the 1913 and 1513, besides some minor wats, and lots of bells/whistles I just dont care about (I dont need the auto config setup, or internet radio, or built in music streamer (I am running off my pc) etc...).
So what am I missing (if anything) in terms of sound quality if I go with the 1513 instead of the 1613, or 1913?