I have spent the last 2 weeks trying to get decent FM radio reception in the middle of an office building with significant EMI (Electromagnetic Interference).  I tried three radios, including the Radio Shack (RS) Portable AM/FM Radio with Extended AM Range, Cat# 12-903, which is modeled after the GE Superadio.  (The Superadio and the RS 12-603/12-903 are often compared out on various pages on the internet and have the exact same features.)  My goal was to receive my favorite FM station, which is a weaker station sandwiched between two strong stations.  The Superadio, with the help of a C. Crane FM Reflect antenna found at ..was the only radio/antenna combo that would bring it in for me. (I also tried 3 other antennas, including 2 amplified antennas)  Another nice item is that I get excellent FM reception on almost every channel now.  The ability to turn off the Auto Frequency Control seems to make all the difference for my needs.  The RS 12-903 had the same switch, but I didn't notice a significant difference when I turned it on or off, like I do with the Superadio.  The only thing the RS 12-903 had going for it was it's sturdier case, but it was  more, even on sale.  I haven't done much with AM, so I can't comment on that.  I hope this is helpful.