I'd like to read a review about it from someone who owns one.
I've had a Roku Soundbridge for almost 2 years now and have been very pleased with it. I use it mostly for Internet radio stations, but have occasionally used it to listen to Sirius (via uSirius). I use it daily for about 6 - 10 hours a day and have never had any problems with it.
I use the wireless mode, and the only "con" that I can think of was that, depending on your router, it may be difficult to set up. On an old Microsoft router, it worked automatically (after entering the WEP key). On a Linksys router, it required that I telnet to the Soundbridge and statically assign an IP. When I researched the problem, it sounded like it may be related to my specific router. Otherwise, the device is great.