I ordered mine from Seidio. It also lets you choose all frequencies. It has a good strong signal with no hiss, volume is OK. I have not had it for very many days, so I don't know about interference from other radio stations, but I think it is powerful enough to overcome this problem. The downside is it has no internal battery, which means it has to be connected to the Cigarette Ligher outlet (or my Seido car mount) all the time. It is also a little big, but since it is going to be in the car all the time this is not a problem for me.
The Seidio site is at:
http://www.seidio.com