Some cheaper models, such as the Brinkmann, have a controller with only three settings, Low, Medium, High (LMH), and there is no temperature probe in the oven to create a feedback loop. We do not recommend these units. You actually have less control over temp than you do on a gas or charcoal smoker. The whole reason to buy a pellet grill is because it is set-it-forget-it and it hits a temp and holds it regardless of the ambient air temp outside, winter or summer. On these LMH controllers, the temp fluctuates widely and it cannot correct itself for the weather. They just aren't as smart as a digital device. Whether you're smoking a few slabs of ribs on a scorching summer day, or six pork butts during a blizzard, the three position controller only knows auger on and off times for Low, Medium, and High. It has no information on the temperature inside the cook chamber.
To sear a steak you need direct radiant heat. I don't care if you can heat the air to 1000°F, it is still indirect heat and that does not deliver as much energy as direct radiant heat. It's physics, but not hard to understand. In short, heat is not the same as temperature. It feels hotter at 80°F if the sun is shining on you than if it is 80°F in the shade. I discuss the concept in more detail in my article on thermodynamics of cooking.
Wood pellet grill is a two-in-one mixture of a smoker and a grill. It doesn’t provide direct flame for your steaks or meat as a grill would which eliminates flare-ups. Since there’s no direct flame, searing meat isn’t an option and there’s a better choice if this is your desire. However, if you desire a great smoky flavor with an easy cooking process then a pellet smoker is an excellent choice.
To your question regarding Traeger, I’ve not reviewed their grills of yet. I do know that Traeger as a company is taking steps to up their game some, as quality/reliability of their pellet grills has diminished over the last few years. The new CEO – Jeremy Andrus – they hired comes from the Skull Candy company and brought that headphone company from annual sales from less than $1 million to nearly $300 million. I know also that a few big hitters in the BBQ world are being contacted by Traeger to bring the brand back to its former prominence. You can read more about that here from the site of one of the company’s that now has an ownership interest in Traeger: http://www.trilantic.com/News_Story.aspx?StoryType=1&ID=56.
Up next to find its place in our pellet grill review is the REC TEC’s mini portable pellet grill. It has a 341 square inch cooking surface with 180 degrees to 550 degrees Fahrenheit temperature limit, with 5 degrees increment. But it can easily reach 600 degrees Fahrenheit in full mode. It has a satisfactory pellet hopper capacity and has folding legs. It is great for travel and movement as it is compact and small in size.