Well since no one has mentioned it I will (I'm a broken record with this stuff lol).
You could always do a simple rewire:
https://www.smokingmeatforums.com/threads/mes-rewire-simple-guide-no-back-removal-needed.267069/
Buy an Auber Plug N Play PID controller and then you would have an even better performing smoker than what it was before it broke down :)
Start with the WS-1510ELPM model and go up the page (towards the top, yes higher in price) and any of the models should work for you. It just depends on how fancy and how much money you want to spend. Anything below the WS-1510ELPM model doesn't handle the 1200 Watt needs of your MES (I think).
https://www.auberins.com/index.php?main_page=index&cPath=14_28&page=1&sort=4d
I kid you not that your smoker would be better than what it was before.
If this interests you, feel free to ask all the questions you like!
If not then I would lean towards the Somkin-IT 3D or 4D. I have never owned one but to do it all over again and not caring to rewire I would have gotten that device :)