Sandman, if you are going to smoke bacon you absolutely don't need a PID for a Bradley. A digital 4 rack works great.
For sausage, that's a different story. You need a tighter temp control device. I had the Auber Dual Probe PID that I was too stupid to figure out how to program. Had too many "codes" and stuff for me. I sold it after 3 years still in the box and bought a BBQ Guru DigiQ DX2 with the Power Raptor. First time using it with the Bradley Digital the clouds parted, the sun shone brightly and I heard angels sing. Super easy to use.
You do what you think you need to do.