I have owned the original and the A versions... The A was pretty cool due to the auto backlight feature etc.. I never got around to the B version to play with it. Also owned the big brother/sister the PRO-2052. Also a pretty good scanner in its own rights. But like most of the other Uniden Made for Radio Shacks, none had the *extra features* I wanted and needed in an scanner such as CTCSS/CDCSS decode, Alpha Tagging etc..... So I moved back to GRE made ones fairly quickly.