While there's not a lot to dislike about pellet smokers, it really comes down to your cooking/grilling style. Some Smoking Geeks prefer pellet smokers to traditional smokers (or even the Green Egg style smokers) testifying that flavor is superior to that of other styles of smokers within the price range – and it's hard to argue with them. While Traeger is the pioneer, there are other brands that give it a run for its money.
You want even grilling: One of the downsides of using a charcoal grill is ensuring that the entire grilling area is evenly heated. Spreading the charcoal evenly and avoiding hot spots is difficult. Traeger’s pellet grilling system overcomes this problem with a fan that evenly distributes the heat throughout the grilling area, much like a wood-fired oven would have.
You prefer a direct heat method of grilling: The Traeger grill uses an indirect heating source, much like an oven, so you won’t be able to sear meat, as many people like to do when grilling a steak. The Traeger system is better for those people seeking more of a smoker type of cooking system, although you can sear your meat by using a frying pan with a little oil initially before you finish cooking it with the Traeger grill. You can use the frying pan on a stove top burner or on the surface of the Traeger grill.
But even with their indirect heat, wood pellets do something gas can’t; they give your meat that natural, smoky flavor you expect from wood. They don’t create as much smoke as wood or charcoal, so the flavor is not as intense, you swap that intensity for convenient cooking. The smoke they do create is clean and easy to control. And the hotter you burn pellets, the cleaner they burn, letting you crank up the heat when you don’t need smoke.
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.