I used to like American Pickers a lot more than I do now. Don't get me wrong, it's still interesting, but it's not the same for me.
I met a friend here in Upstate NY that had the American Pickers show send out some people to her friend's place. Not sure how that part happened, but she said that they got there and found a really nice old car in her barn, and wanted to use it for the show, but there wasn't enough other "good stuff" for that to be a segment on the show. They bought the car, and had it trailered away. Some time later, on the show, that very same car was "discovered" in someone else's barn while they were picking that other location.
Since nothing is actually claimed about the true authenticity of the discovery process, and with the facts and details about each item being what makes up the majority of the time on each episode, maybe that part doesn't matter. But it feels like I'm being conned. Actually, most of the "reality" shows have this same aspect in one way or another if you look close.
Aside from that, I know Garczar seems to have a very vast depth of knowledge on older cues, so I'd put him on that list.