Don, I'm just starting to learn this stuff too.. Night Vision is usually an Infrared set up that has its own illuminator, or another can be added, but its just more junk to pack around. Thermal is the way to go IMO, but its still too pricey for me, considering how little I'd actually use it.Thermal shows you temperature, NV just lights everything up for you and doesnt discriminate my temp as far as I can see.
