I understand the difference between using like a heat lamp and a UTH but what about the different types?

A CHE has the same effect as a lamp without the light? It still zaps humidity right? It doesn't have the UV components (should the animal need it) anything I missed? Are CHE best for ambient temps?

UTH provides belly heat while a lamp will be a bit more spot oriented...

My real question is what is the difference between Flexwatt and a UTH? Can flexwatt be used effectively the same way a UTH could? It seems to me like flexwatt is more versatile than a UTH but also more fragile.

I'm going to be setting up another enclosure for an incoming snake and have the time to really analyze how I'm going to set it up so I thought I might open what i feel is an interesting discussion