The bonus disc for "The Kingdom" is identical to the Target one, I can confirm that, I just compared it with what was listed above. The same goes for the "Jarhead" bonus disc --- identical to disc two of the two-disc set.

I don't own the two-disc "Ray" set, but I'm going to go out on a limb and guess that the content on the first two discs for "Ray" are identical to that set as well. And the third disc? I'm not sure where that content came from. That may be the only thing exclusive to this set.

It's definitely tempting for this price, and some pictures may put me over the edge, but the two-disc "Jarhead" set that I own is so nice I'd almost rather keep this than upgrade my one-disc "Ray" and own "Miami Vice."

The 3-disk Ray is pretty much the Limited Edition actually I believe. The content on the 2nd Disk of Ray was on the regular edition of the film (Either a flipper or a two disk set depending on the version you bought).

Are any of the discs in this set flippers?
I may have to sell my Ray (1 disc) and Miami Vice to upgrade since I haven't got the other 2.

^No, No flippers all disks are single sided.