I am currently a Sirius subscriber, and I am quite happy with Sirius. But I would also like to receive the stuff on XM. I have the Best of XM, but I'd like to have XM's music channels too. Are there any radios out there compatible to both XM and Sirius yet? If not, any ideas on when there will be? Since XM and Sirius merged, I think it would be wrong to buy another radio for just XM and have two radios in my car.