The digital numbers look cool! Pro you will have an extra controller, con you will be out $189 and you will still not know the internal temp. Also I found my inverter did not like the digital and I had to go back to the led type when running off batteries and inverter. To know exactly what is happening inside my FE I use a probe from the Thermapen folks with one of their digital readouts. Built for smokehouses and probe good for 650 degrees, armored cable.