Pellets are made from different woods, each of which imparts a distinctive flavor to the meat. Hickory, oak, maple, alder, apple, cherry, hazelnut, peach, and mesquite are among the flavors available. For more about pellets, read my article, The Science of Wood. There is a pretty good forum for people who have pellet cookers at PelletSmoking.com and of course our Pitmaster Club has a lively discussion on them with many active users.
After 10 days of not seeing anything in my email I called them. They told me they had no order. After two weeks and more phone calls then a grill finally shows up but without the cover or the pallets which I paid for and was on the order. Three calls into managers and customer service still not resolved. When I threaten to take the grill back to Costco I was told to go ahead and have a nice day.
Of all the different smoker designs available, pellet smokers are the easiest to use, because they're thermostatically controlled, like your kitchen stove. You just select a cooking temperature, and a controller maintains it by feeding wood pellets to a fire pot as needed to maintain your set temp. Set it and forget it. You can throw a brisket in a pellet smoker, set it for 225°F (105°C), go to bed, and sleep like a baby, knowing you'll wake up to delicious smoked meat.
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.
Instead of logs, the pellet smoker is fed with food-grade cylinders of wood pellets that are an inch long and ¼-inch wide and are made of compressed hardwood sawdust. According to the best pellet smoker reviews, pellet grills are easy to use because it’s easier to maintain its temperature because of these sawdust pellets that are subjected to great heat and high pressure, which ignites lignin (natural wood glue).