I don't know if they've changed or not, but I got mine as hand-culled matched pairs via the now-defunct Sound Room, about 20 years ago. A pair each of the omnis, cards and 'hypercards', and the hypers were the clear winner as far as flatness of response (the only one of the three which has no lift at the top; that lack of lift leads many to find it dull); and the hypers are far flatter at 180 degrees than the cards.
The flatness at the top makes them excellent for Classical spots.
The omnis are very nice as well, but can be a bit bloated and 'wooly' at the bottom.