The Inq has taken a look at the Sirius S50, here's a small snip from their full review:

THERE HAVE been few items, electronic or otherwise, that I've waited with bated breath to arrive. While kids were waiting outside 24 hours before the arrival of the X-Box I was walking by them to ask if the S50 was in yet. For more than a week I was in at least two stores everyday asking. Interestingly enough on the day it came out I only looked and didn't ask. This was on Wednesday the 23rd, the day before Thanksgiving in the US. They had three, but they had them hidden.



Link: The Inquirer