I think with prices of vintage recently, a lot of people are reevaluating what they desire. I tend to still favor centering, but if I get a good deal on a card with "bad" centering and amazing registration for a good price, I will go for it. At this point with prices crashing on modern and vintage continuing to climb in many cases, I am just going for the best bang for the buck.
Saying that though, my "perfect" card is a PSA/SGC 3 to 5 range card that has great centering, great registration and some rounded corners or edge issues. I really prefer slight rounding of corners for pre-1960 cards with all the card doctors in the hobby. I know there are other ways to doctor a card, but I feel a lot safer avoiding this higher graded vintage. Plus, it gives the card character. Don't like creases, but a few surface wrinkles are ok with me. I have been getting those as I age as well.
