Originally Posted by James Sonne
Sirius is better than XM in every way. HUGELY better reception (3 satellites as opposed to 1), ZERO commercials on ALL music stations (as opposed to 2+ minutes of commercials per hour on XM), better selection of channels, more mainstream stations (FOX News, Discovery Channel, E!, ESPN), better talk radio stations, more support from car manufacturers.
Sirius rocks, forget about XM.
Different strokes.. but I've been happy with XM for quite some time, have had no need for manufacturer support, good coverage from the TWO satellites plus local FM retrans, get all the channels discussed above. Most important, the traffic stations available in a number of large markets are HUGE for those who'd rather drive than sit. Wouldn't be surprised if Sirius has/will have similar, though the traditional broadcasters are hitting Congress hard to legislate away the ability of satellite broadcasters to offer local programming. See here for one view on the issue:
http://grassroots.xmradio.com