Another vote for Jaguar here. They look superb, drive superb and sound superb. There's hardly any arguing to be done with those attributes.
I thought Lincoln wasn't bothered with existing any more. Do they actually make anything interesting? I can see the effort that General Motors has but into Cadillac, but Lincoln to me seems stuck in the nineties, being little more than fancy Fords.
By the way, I forgot to say that for some reason BMW has decided to ruin the handling of their cars, so I would say avoid.
I've just come back from driving a Hyundai for an hour or so, and I have to say, whoever told you that is right. The improvement is impressive, but they are not quite there yet.