I've played with the infared themometers but don't have one.
The downside (and maybe they've come out with something better) is that it took nearly a second to get a temperature reading which meant scanning a row of breakers would have been terribly slow.
And the thermometer "sees" a circular area just like a camera lense does - so at 12", you're reading the temperature of whatever its pointing at but at 25', you're reading the average temperature of a circle maybe 2' in diameter.
