I have a 2018 and it has been my favorite car I have ever owned. We also used to have a 2022 defender 2 door which we sold because 2 doors is just so inconvienent.
We have had 2 problems over the years, first was the windshield leaked. This was a 2018 specific issue in which they used a bad glue. I took it in, it was done by the next day.
Second issue was legit and is the source of the internet "cooling system" problems. In the coolant system they used piece of plastic about 5 inches long that was mounted on the bottom of the engine. It cracked around year 6 or 7 of ownership and had to be replaced with a metal version. It cost a ton of money to fix because you had to take off everything to get to it.
Yes Brake jobs are expensive as they almost always do the rotors with the pads. We did one around 80k miles and that was with a lot of towing. Oil changes are $300 but it is only recommended every 16k miles so that is a wash.
There have been a few little things, but the Discovery was pretty good and the Defender never had a single problem except windshields tend to break because of the hard rocks here in the mountains. That 2 door defender would go anywhere.
Would I get another? Well not right now because Trump's tariffs have hit JLR worse than any other company as they do not produce ANY parts or cars in America. JLR has been hit hard and the prices reflect it.
If price were not an object I would ABOLUTELY get another. I want a Defender 4 door a lot. We have had a lot of good cars but every time I am driving I still go to the Discovery. I liked it better than the Porsche, Ram 1500, 4runner, Mercedes, Camry. It is my all time favorite car.
Last thing... here is why I like it so much... it tows 8200 pounds, it is incredible in the snow, I have taken it down a LOT of Colorado trails and roads where everyone raises an eyebrow that I am back there, it gets 22 on a trip and is crazy comfy, it still looks great. It is just a bad a$$ car