No, Jaguars are not "crap." We work on many, and they are nice cars with good fit and finish.
But a Toyota they are not. We deal with plenty of people that get sticker shock about how expensive they can be to repair. And the maintenance that's required on a regular basis. They are not inexpensive to own, but they are reliable if you keep them maintained.
They are NOT Fords. They are not remotely close (with the exception of the X-Types and the S-Type 3.0). I can't understand the people who say that. I work with them every day. The transmissions, brakes, etc. are all JAGUAR. That "Ford" tranny in the S-Type V8's? It has Jaguar planetary sets. The software is Jag and requires a special scantool. There is not a Ford dealer in their right mind that will work on them.
If you can afford the maintenance, then yes, it is worth picking up an older Jag. That's where all the interesting ownership stories came from. No one's going to reminisce about owning a Toyota Avalon, and the Jag will give you an enjoyable driving experience the Toyota could NEVER deliver. Just get a pre-purchase inspection done by a shop that works on that car.
Work for a Jaguar / Land Rover specialty shop