As NePas pointed out, the power raptor (which now comes in a choice of 3 digital temperature controllers) does not use the same algorithm as the PID. It uses a different algorithm to control the temperature, which I feel is better.
NePas had the Competitor, which only had a LED light display and was not digital. I had that model but upgraded to the DigiQ II, and it works fine for me. I don't need a programmable model. When I do fish or sausage and have to bring the cabinet temperature up gradually, I don't want to program it so that after so many hours it will go up so many degrees. I still like to check, and if need be manually shorten or lengthen the time period. But you can save money if you go with the PID.