I have two pellet grills. A Traeger at our lake home and a Camp Chef DLX at the city house. I've had them for several years; I also hang out at
The BBQ BRETHREN FORUMS. - Powered by vBulletin, where the cooker selection discussion is intense and never-ending.
The first thing to understand is that a pellet grill is basically a smoky oven. Some have a feature that claims to work like a grill, exposing the burning pellets for searing. IMO this is a workaround vs the basic nature of the things. Ref @ExFlyBoy5, a pellet grill is for smoking and a charcoal or propane grill is for grilling and searing. For my Camp Chef I have the add-on propane "Searing Station" and like it a lot.
Traeger and Camp Chef are kind of wannabe higher-end pellet grills but in fact they are in the low prices category with many others, including Pit Boss, Green Mountain, Louisiana, etc. There is very little to choose among them except price and availability. IMO my Camp Chef is the best because they have a patented pellet ash cleanout system. This compares to most brands where the grill must be cold and you have to take out a bunch of dirty, greasy pieces to get to the burn pot from the top. The sear station is also a big plus; I don't know any others that have this option.
https://amazingribs.com has extensive cooker reviews.
Higher level pellet grills like the MAK and the Yoder are beautifully made and feature much heavier steel but the meat you're cooking doesn't benefit from any of that. As an engineer I would love to own a Yoder for its craftsmanship but as an engineer my cost/benefit calculation says it is not worth the money. YMMV.
I am a Kansas City BBQ Association Certified BBQ Judge and can tell you that at competitions there is a huge variety of cookers; pellet, barrel, charcoal/wood, etc. My conclusion from that experience is that there is no magic cooker. A good cook can probably produce competition-quality results from any of them.
Finally, the first thing you buy often just teaches you what you really wanted. You're not getting married here. Just pull the trigger on something that looks good, then cook and learn.