If I had to narrow down this list down to a top 10, the Grip
from Australian company STM would definitely be in there. This is more of a hard-shell-style case that's got a soft-to-the-touch exterior. It's slim, feels nice in your hand, and its ribbed design makes it easy to "grip." It has the automatic wake feature, but the real extra is the integrated kickstand on the back that allows you to prop you iPad up in typing or video watching positions.
The only question is how the case will look and hold up over time. This type of material doesn't always wear well, but it sure looks good new. It's also worth mentioning that the case, depending on the color, may show some fingerprints (or really the oil from your skin). The smudges are easy enough to wipe off, but I just thought it's worth noting.
The Grip is available in black, blue, red, and tangerine (I used the black model).