Access to electricity has its downfalls. First, if the cord isn’t long enough you will need to make sure you have a proper extension cord. Using the wrong cord is a fire hazard. Do the math (watts / volts = amps) and make sure you have the right extension cord.  The smoker is also less mobile, and if it's stored outside it absolutely must have a cover. Electrical components and weather don’t mix.
The SG and ZG are not exactly the same though. Just from the pictures I can see that the bases are different. The SG has L-shaped legs and a bottom shelf while the ZG has square legs that are larger than the DLX legs but no bottom shelf. There were also different specs for many features. I took a picture of the ZG spec sheet at the store and compared it to the SG specs on the website and there are slight differences in capacities. For example ZG 3778 cubic inch - SG 4859, grilling area ZG 776- SG 811, hopper volume ZG 18 lbs - SG 22, ...
Our reviewers spent 12 hours testing a top-selling, budget-friendly pellet grill. To get the most comprehensive feedback possible, we had our testers take this grill for a spin and had them consider its most important features — from how much it can cook at a time to how easy it is to travel with. We've outlined the key pointers here so that you, too, know what to look for when shopping.
Whether it's smoking a rack of ribs or grilling a wood-fired pizza, to even baking a homemade apple pie, do it all with Traeger's 6-in-1 versatility. No matter what you grill, smoke, bake, roast, braise, or BBQ, it all gets flavored with amazing Traeger wood-fired taste. Don't settle for a grill that can only grill or smoke when you can do it all with a Traeger.

But as said, there are a few things we don’t like; it’s relatively small, doesn’t have a lot cooking space, and the design feels cramped. At the same time, it’s still relatively heavy at 140 lbs. For the same price, you could choose the Z-Grills Master 700D, which packs almost 25% more surface area on the rack. That doesn’t seem like much but is a significant amount of room.  Or you could just spring for the Traeger Pro 22. There have also been reports of poor quality control, and that the temperature control is very inconsistent, often swinging up and down nearly 30 or 40 degrees.
Minor problems (Product): 1. Main grill rack does not fit snugly, leaving the rack to half almost a half an inch in all directions to move. (not so much a problem when cooking but it does move) 2. Wind is a major factor making it difficult for this to get up to heat and stay there. 3. It rarely comes to the temperature I set it for, and usually is about 10-15 degrees below, with trying all of the different possible adjustment settings.

The wood pellet grill features a dual rack design with a 513 square inch main cooking surface and 187 square inch warming rack. With a 20-pound hopper capacity, the grill has plenty of space for wood pellets to keep grilling during long event and parties when you have many mouths to feed. An automatic pellet feeder makes it easy to maintain the desired temperature, so you can focus on just the grilling itself.  

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