The North versus the South in America. East and West Germany. Quebec revolting against English-speaking Canada. Sirius and XM. History's chock full of broken spirits, hurt feelings and splintered memories, but the latter of these mentioned touches our heart the most. We mean, just look at this new boombox -- the Sirius XM Sound Dock has somehow managed to put differences and demographics aside in a mighty effort of reuniting two satellite radio companies that once wished death and destruction upon one another. Expected to ship later in 2010 for $129, it's the first docking speaker station that's compatible with both XM and Sirius '