Pellets are available from a number of sources because they are popular for use in home heaters, so if you are worried that you will be buying a gizmo that might be worthless someday if the pellet supply runs out, it is unlikely. As more and more pellet grills appear, and word of their excellence spreads, sources for pellets will become numerous. I've even heard of a few Home Depot's carrying them. The bad news is that I have tried several brands and I always return to BBQr's Delight. They seem to have the least sawdust, so they are less likely to clog the auger, and they have a higher percentage of the flavor wood on the label.
just received my new YS-640 two weeks ago and I absolutely love it. The shipping process and delivery was just as described. The delivery guy unloaded it off the truck, and wheeled the pallet into my garage. Everything was perfect. I am very impressed with the build quality...this thing is a tank. So far have smoked ribs and a brisket, and grilled chicken breasts. The grill heats up much faster than I expected. Temperature holds very steady over the long cooks. I love having the built in probe ports. Still figuring out and tweaking the baffle to control different cooking zones. Only negative thing I say is it can be difficult to manouver in tight quarters because it's so heavy and only the small caster wheels turn. So if you need to move your smoker around a lot, consider the comp cart.
What makes it stand out from the crowd is that it’s the only pellet grill on the market (so far) that has an ash cleanout system… no more hauling out your vacuum to the patio to suck out the ashes when it’s time to clean out your grill! You just need a small cup… and with a simple turn of a small lever, the ashes drop out! You’ll LOVE this feature!
****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.
Today I grilled up a T-Bone steak. And I used the Grill Grates. I upped the temps to 600 degrees. The T-Bone came out FABLULOUS!!! Actually, it cooked faster than I expected, and the sear marks were way better than I expected. I have been using Weber Gas Grill for many years and way satisfied with the results, but the Yoder smoker kicks ass...BRAVO YODER!!
PG24 by Camp Chef Pellet Grill also brings along a digital controller which you could use to set your desired temperature and at one point the heat in the chamber will be automatically adjusted. It allows meat to be smoked for hours at a temperature of 150 degrees F. You could increase temperature to 500 degrees F for searing and grilling. With convection, the cold and hot areas of the grill can be replaced with even heat.