If there's ANY case that could yield some kind of evidence, it's most likely the Aurora case.
Wait a sec. You completely dismiss Roswell, despite living witnesses, including Dr. Marcel, who handled pieces of the wreckage, and then you bet the farm on Aurora? Aurora is widely considered a hoax and fabrication intended to boost the image of the 'little town that almost wasn't there.' Indeed, the case is errily reminsicent of Roswell. There's supposed to be somewhere, a 'piece of metal' that is kind of strange, but no one knows where it is. There's a grave of a 'little man' no one is allowed to dig up, and its location has convenienty been lost, and once they found a 91 year old witness who remembers the incident. The original author was well known for tall takes and was friends with the mayor on whose property the craft landed. Turns out the windmill that figures prominently in the story was never there. That's it. You couldn't have picked a more obscure case if you tried.
http://www.ufologie.net/press/dallasobserver3apr2003.htm
I certainly share in the frustration expressed by many here on the state of Ufology and the hoaxes that permeate it. Although I dislike conspiracy theories in general, if the Disinformation Agents are doing what some people think they are doing, and, indeed, what the Robertson Panel suggested they do in print, then they certainly have done a good job because you are right where they want you to be. Mission accomplished.
For the sake of argument I'm going to postulate that few people here have taken on the mantle of Protector of the Realm to show us misguided souls the way to true enlightenment, and few people have been assigned by some nefarious alphabet agency to keep the pot stirred over at the Paracast to ensure nothing of substance gets accomplished. And surely, judging from the responses here and how people treat one another, few people are here to make friends. Of course, all three are possible!....
The question that remains is that if all this is bunk, and you believe it is all bunk, then why in Heaven's name do you hang out and spend so much time here? Why are people not being more productive with their time? If this is all bunk, it would seem to be sheer drudgery having to put up with the same old arguments and the same old cases again and again and again. Don't you have anything better to do? You know: Get a real job, go to school, make babies, eat gourmet meals, watch Oprah.
Staying here under those circumstances is like saying you don't believe in God and the resurrection of Jesus, but, in spite of the whole world out there, you choose to hang out in the Catholic Church. Well, maybe the Lutheran Church since we do like to nail the hoaxsters to the wall the same way Luther nailed his feces to the wall, I mean, 'theses.'