I don’t know why these cookers are referred to as grills. By definition they are not grills. Grilling involves cooking with direct heat and none of the pellet cookers I’ve seen use direct heat; they all use indirect heat. They are more accurately described as smokers/convection ovens. For me what this means is they’re useless for cooking chicken since I like my chicken cooked with crispy/burned skin. I’ve done some experimenting to get the skin to crisp up but always end up with leather skin. They have their place in outdoor cooking but grilling ain’t it. I just bought a Green Mountain and I’m still debating if I’m going to hang on to it. Shame on me for not doing more thorough research first.
One comment I see a lot in various forums like Pellet Heads Forum is that you want as much efficiency as you can get. As with lump charcoal, this means burning as clean of a cook as you can with as little ash as possible. Different pellet mixes will produce differences in what you get in this area, and the cooker you’re using will dictate this to some degree as well.
Pellet grills preheat quickly, so you can start cooking almost immediately, and the pellets are available in a number of woods, for different smoke flavors. The smoke has a subtle wood-fired flavor with less of the acrid flavor that comes from standard wood or charcoal. For the maximum smoke flavor, it’s best to cook at a temperature lower than 250 degrees, while higher temperatures cook faster with less smoke.