Sirius is finally getting in the rhythm in the entertainment business of portable satellite radio. For your knowledge the S50 will not be counted as there is no built-in tuner. The company’s new gizmo is capable of recording 100 hours of Sirius programming, double that of the Helix, but that may be just because Sirius uses different audio compression than XM. But the Stiletto one-ups XM's portable offerings with Wi-Fi. No, you won't be checking e-mail on this thing, but you will be able to stream Sirius radio via the Internet over a Wi-Fi connection when you're in a zone that doesn't get Sirius reception. The product is available for $350 which seems to be a bit costly.
