I like the look of the Savannah Stoker controller and from what I have read they perform great. However I did find the Amazen pellet tube last season on clearance for 8 bucks at Walmart. $8 versus $189, the pellet tube wins. I don't use it all the time and on my vertical Series 3 Pit Boss no extra smoke is needed but I have use the tube a few times on the PB340.
Hopefully one day soon the PID controllers will become standard on all pellet grills.
Well I received a hint from PB that a PID is coming to the Pro Series, Navigator, and Sportsman. Tube is great, but the Savannah controller gives you that consistency and temps without the major swings. I tell you it produces a lot of smoke and Platinum grills should not have a probelm unless there PID controller is not a good or PB really has not dialed in the software.