Whoah, hang on a minute - I never said a Disco was more reliable than a Hilux. ...or even a Tacoma.
I did say that a Disco's frame is more durable than a Tacoma - it is. As Garrett said, the frame, t-case and transmission on a Disco are extremely tough, and that's what I meant regarding "the core".
I agree that the Rover V8 is not the more reliable engine. ...but when properly taken care of, it can last a long time and be dependable. Sure, the head-gaskets crap out after 100-150k miles, but they aren't so hard to replace... and the rest of the engine ain't so bad. There are other things that suck too. Brake calipers, for one (which is why I replaced mine with Defender calipers and haven't had any trouble since). Engine mounts - again I replaced the stock ones with aftermarket ones that even if the rubber fails my engine won't move. Fuel pump - which I replaced with the Malibu pump that ain't gonna die.
Things that concern me about the Taco (that I just didn't know about before reading that article) - weak a-arms, rack and pinion steering, and a partially-boxed frame. Now, the frame you can't do anything about. Not really. It's just not as strong as a Rover frame, and if you overload the vehicle it's not going to end well. Take too hard of a hit offroad, and the same applies. The Disco's steering isn't the most durable out there, not by a long shot - but at least it's relatively easy to replace, and possible to replace with a heim-jointed, relocated and more durable linkage and dampener - and that upgrade would likely cost less than replacing the Yota rack and pinion when it wears out. Sure, these aftermarket parts aren't available in say, Uganda... but they are available in San Diego, which is where I am so I don't give a crap about the African Warlords aftermarket needs.
I agree that a Yota may be more dependable (Hilux or Tacoma) than a Disco. ...but Discos are tough, easy to fix, and simple to upgrade and improve reliability. That's all I meant when I said I was glad I have a Disco. I bought it because I like it, but I think there are other reasons to own one than simple affection (which is of course, reason enough).