O.K. moxa...Here we go...
You want to buy a radio for your old toyota...You go to your local car audio store...Look up at several brands, Alpine, JVC, Eclipse, etc...
You choose Model 8503 by Eclipse because it has all the bells and whistles, including HD-1213. The main reason was that in addition to everything else it had SIRUS as an added feature.
That made it the "BEST", AND YOU ALWAYS WANT THE BEST DON'T YOU?...
That is how the PR re SIRUS is "related to us"
And moxa, go back and re listen to last CC and you will see that Edig work during the past year with ECLIPSE was to make many of Eclipse units work with EDIG and not only "One" as you say...
Regards...Gilgamash...
