Smitty:
Always Welcome!
In truth there are no "bad choices" in your list of perspective grills to adopt
....
But, thru the years of owning a lot of different brands - I find that each brand pellet grills ( like many other products ) have design biases because humans have those biases/preferences based on their intended usage.
The trick is- to figure out from examining the information about each one - *IF* the design intent will meet YOUR needs best.
Examples of design bias in pellet grills:
Some are black painted metal, some are stainless. SO the bias in this aspect of engineering/design of the grill is either in favor of being able to spray paint when needed to "freshen up" the grills appearance, or to be able to clean the stainless, and make it look nice again. Neither is "THE" right answer for everyone. It depends on how YOU envision your use of the grill including cleaning and maintenance.
Another example -Carbon steel, cast iron, anodized aluminum or stainless cooking grates? Stainless is probably more permanent....but cast iron and anodized aluminum can REALLY sear fast and hot.
So I recommend that you start a list of features that you want in a grill. Think thru NOT just cooking only...but the long term ownership. Yes, warranties are important - but so is the actual customer support one should receive the manufacturer.
All of LTBBQ is here to assist you, but not tell you that you chose wrong once you buy a grill. Again, there are so many "good" choices...and one of them will be your "best" choice.