Next-gen radio companies Pandora Media (NYSE:P) and Sirius XM (NASDAQ:SIRI) saw their stocks go in opposite directions over the past 12 months. Pandora, one of the top internet radio companies in the US, shed more than 60% of its market value. Yet Sirius XM, the country’s leading satellite radio provider, rallied nearly 20%. Contrarian investors might be wondering if Pandora can recover after that rout. Pandora might not be down for the count yet, but I think Sirius is still the better radio stock, for four simple reasons.