With smokers sans a digital controller, the temperature fluctuates and an average cooking/smoking time is achieved producing very good results, even if we do agonize over the swings. A smoker that can reach 300 degrees has the potential to swing to a higher temp when one sets the control at say 275 or 300 and could produce disastrous results.
At those temperatures, I would guess that a digital controller would be highly desirable, however, a poorly designed or inaccurate digital controller would be pretty much a liability as reported on another well known and popular smoker sold at big box stores and commented on in other forums. The controller on the Cookshack is accurate and stable. The smokers themselves are also expensive, and a replacement controller is extremely expensive to the tune of $600.00 or thereabouts for the Amerique 066 which is similar in size capacity to the model 3.
That is my take on high temp and digital control, for what it is worth.