Just my 2p worth… As mentioned before I’m a Big Green Egg fan, but note your comment on the crazy prices. I love mine so much I picked up another at the weekend, but I was offered a killer deal that I couldn’t turn down. I really do like them that much. As noted, other kamado grills are available!!
With a Weber (or similar design) you don’t adjust grill height- you use top and bottom vents to control the temperature and cook predominantly with the lid on. “If you’re looking, you’re not cooking”
The question would be - what do you want to achieve? BBQ sausages? Low and slow? Hot smoke? Cold smoke? Pizzas? Roast meat joints?
This’ll dictate what you might spend your money on. I’d get the best you can with the money you’re prepared to spend on something specific. As some have suggested, a separate smoking box isn’t too expensive and might be worth thinking about if you’re not smoking very often
Weber have a good reputation and having used them I’d consider them myself. Not sure about the brand you linked to but check reviews for build quality as some may only last a couple of summers
A note on charcoal - I’d go lumpwood every time as long as the BBQ is equipped to control temperature. You can cook for longer than briquettes and don’t need it to be fully lit before you start so you can get cooking quicker. Also there are far fewer chemicals and additives. Less ash too which can inhibit airflow on longer cooks. Oh and don’t forget to source your charcoal responsibly