Really Chuck, I'm just joking with anyway, and I haven't really been following the discussion on meters, but if I had one to pick, I'd pick a frisker of one of many variants.You're welcome, but I didn't necessarily put the description there for you. It was more to give the idea of gamma energy in as simple a way as I could.
Ok, now I understand what you are getting at: The fire analogy is showing the parallel between an atomic bomb blast and a fire.
There is a pretty close relationship between the two. The heat and fire are the initial blast, and the smoke and ash are the fallout that is left over and lingers...
Neither of the types of CD survey meter were intended to indicate the initial blast (heat and flame). Both were made for registering the fallout... the ionization chamber meter was intended to give you a measurement that allows relatively safe travel in a contaminated area, and the GM tube meter was intended to help in keeping the shelter clear of fallout residue that might be tracked in, or ride in on clothes.
However, the fire analogy has nothing to do with the measuring capabilities of a survey meter using an ionization chamber vs a survey meter using a GM tube. The difference is purely one of quantity. They each treat the energies of all gamma photons as being the same, but shows a measurement of the flux, or number of photons per second.
Reason being, I'm not as concerned about mR/hr as I am counts per minute. A frisker will give you good all purpose beta/gamma, has good sensitivity, and since radon daughters are beta emitters, you can have a good time in the winter during temperature inversions.