The PID I picked up is from Auber Instruments. Not the cheapest but works great holds temp within 1 or 2 degrees. You can save up tp 6 smoke schedules. Each schedule can be configured for time and temp. Sach as for snack sticks you can build a schedule that will control each time temp phase. Turn it on and it runs the schedule. Away to save some cost is to pickup a used mes that the buner still works. You will be bypassing the OEM PID anyway. To finsh off my MES, I added a Smokedaddy cold smoker and placed a ceramic floor tile over the buner to disipate the heat. Both my MES’s have hot spots back right corner. Vent is right over the buner pulling heat straight up that side. I like how my setup works so far.
Enjoy

https://www.smokingmeatforums.com/threads/mes-rewire-simple-guide-no-back-removal-needed.267069/ I rewired per instructions at above. Picked up PID FROM Amazon. Have done on a MES 30 & 40 inch. Works great