I think so. I own 2-221/2 kettles, 1 smokey joe, and 2 Weber Smokey mountain cookers.
My one kettle is about 25 years old. Now if that isn’t quality I don’t know what is.
Just in case you may be interested, I’m starting to compete in BBQ competitions using all Weber stuff and I don’t work for or am supported by Weber.

I have a Weber charcoal grill. I heard you should bake your chicken before you grill it…is this correct? How should I prepare and cook the chicken safely and make it delicious?

If I get it from the Home Depot will they assemble it OK or should I do it myself?

Dan is right about the number of servings, but I would pre-bake it half way (30 minutes at 350) so some of the chicken fat cooks off..Use an aluminum foil lined broiler pan and do 1/2 of the chicken at the time. You’ll have fewer flare ups= less burned chicken. As the first batch is cooking on the Weber, the second batch is cooking in the oven. Once the first batch is grilled, (about 30 minutes on the grill turning as needed) put the second batch on the Weber and the first batch in the oven turned down to 200* to keep it warm.

Jennair makes the most expensive high end grills of the two manufacturers you mentioned. For the money, I would choose Webber.
The choice is yours.