People shopping for their first serious smoker often narrow it down to these two, and the reasoning is sound: both hold a set temperature by themselves, neither asks you to tend a fire, and both can be left running overnight. If the reason you have not cooked a brisket is that you cannot spend twelve hours feeding splits, either one solves that problem.
But they solve it in fundamentally different ways, and the difference shows up in the brisket.
The one difference that drives everything
In a pellet grill, the fuel is the heat. An auger feeds compressed hardwood pellets into a fire pot, a fan drives combustion, and burning wood produces both the temperature and the smoke. Whenever the grill is running, wood is burning.
In an electric smoker, they are separate systems. An element heats the chamber, and a small tray of wood chips sits near it. The element switches off as soon as the thermostat is satisfied — which at 225°F is most of the time — and wood only smokes while it is hot enough to pyrolyze.
So an electric smoker spends much of your cook producing no smoke at all. That single structural fact explains the smoke gap, the bark gap and the smoke-ring gap between these two cookers. It is not a quality difference between brands; it is the design.
Where the pellet grill wins
Smoke. Continuous rather than intermittent. Still modest by charcoal standards — a very efficient forced-air burn produces fewer aromatic compounds, which is the whole subject of why brisket does not taste smoky — but consistently more than an electric.
Bark. The convection fan that drives the fire also moves air across the meat, and moving air dries surfaces. A pellet grill is an actively drying environment; an electric cabinet is a still, humid box. For bark, that is decisive.
Versatility. A pellet grill roasts, bakes and at the top of its range does some searing. An electric smoker smokes at low temperatures and does very little else.
Capacity and build. Generally sturdier, with more usable cook area for a twenty-inch packer.
Where the electric wins
Cost, both up front and per cook. It is the cheapest route to unattended brisket, and it burns electricity rather than a 20 lb bag of pellets per packer.
Simplicity. No auger, no fire pot, no hopper, no ignition rod. The list of things that can fail mid-cook is very short, and that is a real virtue on a twelve-hour run.
Overnight reliability. A pellet grill can empty its hopper, bridge, or foul its fire pot with ash. An electric has no fuel path at all — the only thing that stops it is losing power. If the single most important thing is that the cooker is still at temperature when you wake up, the electric has a genuine edge.
Temperature stability at the low end. Holding 225°F is trivially easy for a thermostat-controlled element, and easier than for a pellet grill that has to keep a small fire alive at minimum output.
Which one to buy
Buy the pellet grill if you want your brisket to look and taste like barbecue — dark bark, visible smoke character — and you want a cooker that does other things as well. For most people asking this question, this is the answer, and the method is in brisket on a pellet grill.
Buy the electric if budget is the binding constraint, if you value mechanical simplicity above all, or if what you want is reliably tender brisket with mild smoke and you are genuinely relaxed about bark. It is a perfectly honorable choice and the adjustments that get the most out of it are in brisket in an electric smoker.
Buy neither if what you actually want is Texas-style brisket with a heavy bark and pronounced smoke, and unattended operation is non-negotiable. In that case the cooker you are looking for is a gravity-fed charcoal cabinet, which burns real charcoal and real wood chunks under thermostat control — see gravity vs pellet.