re: Grill recommendation

Not sure which Weber you have that rusted. If it's only after a few years, they will replace it for free.

Having said that, you should look at the Weber Summitt Charcoal, with that kind of budget.

Kamados are versatile and can do anything. They are also fragile and tough to bring temps down if you overshoot because they retain heat so we'll.

Pellet grills are convenient, and easy, but they don't sear well, for the most part, and some complain that the smoke flavor is not strong enough.

Weber kettle is versatile, but temp has to be carefully monitored for a long cook. You can mitigate that by getting a temp control unit. With your budget, you could get a Weber Performer, digital temp control, and a Slow n Sear for $800ish.

Another option that has been getting love on here is the Masterbilt Gravity Dearies grills. The flavor of a stick burner with the convenience of a pellet grill.