My wife and I were one of the first buyers of the YS640 in 2010. We had owned a couple of gas grills that, of course, eventually rust out. My wife saw the YS640 at the Kansas State Fair and called me and said that I HAD to look at this smoker! At first, the smoker had many problems--inaccurate temps, huge swings in temps, etc. Don and Joe kept working on the problems and installing updates--never charging us for updates or service calls. Finally, in about March of 2011, they installed the update that really was the solution. Since then, the YS640 has been a consistent workhorse that does everything as advertised. Built like a tank. built to last. Don and his staff stuck by his product and by his customers. In this day and age, customer service is uncommon. By the way, I thought the YS480 would have been big enough, but my wife said, "our family isn't getting smaller,".....I'm very glad we got the 640 and the second shelf. I have needed it many times. Thanks Don!
When the grill was delivered on or about Nov 23, it was damaged.  The Grill Barrell had a dent in it, caused by a hole punched in the box during UPS delivery.  We didn't immediately put the grill together, so a couple of days went by, and then we began the assembly.  I called Traeger Customer Service and they told me to disassemble the grill, put it back in the same box and packing and return it to them.  I tried on about five telephone calls and emails to explain that we did not have the box, the packing or the UPS return postage.  Traeger then sends UPS to my brothers house 3 times to pick up a grill that they would not send packaging for, nor would they send any packing materials.  They wanted my brother to tear the grill down, electronics and all and return the dented  grill body, but they'll only send a good body when they get the damaged body.  So meanwhile, we have a grill minus a body waiting on Traeger to send us a new one.
I did a lot of research, and ended up buying the Camp Chef DLX24. It was at a price that fit my budget, (under $500) and had a lot of features the others didnt. The pellet trap door for quick dumping of the pellet hopper into a bucket, and the ash cleanout under the drum was a clincher. Being able to pull a lever and dump the ashes into an easily removable cup is a great feature that all grills should include.It has a digital temperature controller, and dual probes (one inside the smoker for grill temp, one for the meat) and overall good quality construction. The second shelf inside is standard (you pay extra for that on other grills). If your budget allows, would suggest purchasing the propane powered sear box ($199) which attaches to the side of the grill and allows for reverse searing meat..
All of GMG’s like of product lines like the Daniel Boone and Jim Bowie come with similar features. In fact, the Daniel Boone will always be a better alternative to the Davy Crockett. However, the Daniel Boone line isn’t winning any spot in our budget pick due to its higher price tag. With its build and quality, it does become one of our honorable mentions, if not the pick; and the Davy Crockett continues to be the top choice for the grillers on budget.

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.