I have a NukAlert. The RadDetect looks like a superior product, though I like the fact that I don't have to remember to change the NukAlert batteries twice a year.

There are plenty of good criticisms of radiation detection devices. Susan's points are valid. Definitely, if you don't have the basics, a rad detector's way down the list. And if you don't live in NY, DC, Chicago, LA or another prime target, it's probably not worth it.

I received mine as a gift and am grateful for it. I live in Chicago and, in the event of a dirty bomb or worse, it would help me make the shelter-in-place vs. get-out-of-Dodge decision.

If you're inclined to get a rad detector, the comparison chart seems helpful. I like that the NukAlert has been around for a few years and is kind of idiot-proof, but the RadDetect appears to have some useful features.