Compared with charcoal and other wood-fired grills, pellet smokers are simpler and cleaner and easier, giving more control than traditional smokers. Wood pellets are dense, burn hot and smooth, and can be easily fed into the flame with an automatic auger, allowing for consistent temperature with minimal effort. Many modern smokers let you practically set it and forget it, thanks to their digital controllers. Pellet grills are also efficiently cheap, often using as little as 1lb of pellets an hour.
****Update 12/2014: So I finally found something negative to report. Today I was cooking 2 pork butts and a brisket and discovered that this grill does not do well with wind on a brisk day (It was 45 degrees here today). When set at 250 degree, the smoker could barely make it up to 190 degrees. I was able to bypass the problem by throwing a cheap moving blanket over the grill (an $8 fix) but I think it's worth noting.
Purchased my grill last fall at Costco, overall it works OK, some meats like Lamb Chops are just delicious. However, customer service seems to be deteriorating as the company is having success. My kids recently purchased me an add on to my Pro 34, a cold smoker. Traeger sells this but does not support it. The installation instructions are incomplete, I was sent parts that do not go with the unit, then customer service couldn't figure it out, this went on for weeks. After getting it installed, I asked for some instructions or recipes on how to use it, there are none. The old cover does not fit now, and Traeger does not sell one to go with a unit with a cold smoker, or plan on doing so. After a web search, I found one at Charbroil that kinda fits. Also, I just saw the same model at Orchard Supply, it now comes with more shelves and upgrades which I now have to buy as extras.
With 341 square inches of cooking space and a digital control board that sets the temperature from 180 to 500 degrees, you’ll be cooking whole meals in this grill, even though it’s the smallest model that Pit Boss makes. It will hold up to a dozen burgers for parties, or a chicken and vegetables for the family dinner. When cooking is done, the porcelain coated grill grates are easy to clean.