Have you joined the Facebook group titled "My Grilla Grills Smoker" ? There's a TON of videos on there by people who own and use the smoker constantly.
Some of the first-gen Silverbacs had an issue with the door warping, but Grilla Grills redesigned the door with some bracing to stop that from happening. All of the upgrades on the Silverbac were from some of the complaints from the early adopters. Grilla Grills heard the feedback and made some good adjustments. Great company overall and while I didn't have one of their pellet grills I was an "early adopter" of their kamado, the Kong. It was a good kamado, but when my first one showed up it was shattered in the shipping container. I called Grilla Grills, sent them a picture, and within about about hour or so they had another one on the way. No fuss, no hassle, and they threw in a free pizza stone and heat diffuser.
I'm sure you'll be happy with anything you buy from Grilla Grills. The only tip I have when going with a pellet grill is to let the controller do its thing. Grilla Grills goes by the motto "Trust the swing" and this means allowing the temp to swing about 20-30° to get a better smoker flavor. They also have their new "Alpha" controller which allows you to choose between a PID controller and their original controller. The PID will try to keep the temps dead even all the time, so it's kind of a best of both worlds type of thing.