iPhone drop protection

I'm going to sound like a broken record here, but I love the Candyshell. It offers 2 layers of protection. A softer material on the inside and a harder shell on the outside. Best of both worlds. I have dropped it from say pocket height a couple of times, on a tile floor with the Candyshell, and no damage what so ever, not even to the case.

Any silicone case you get will protect against falls. Obviously the thicker the case, the more protection.

Also, I'd look for something with the lay-on-the-table design, to lesson the chance of the screen hitting the floor. IF there's a rock, or something on the ground that the screen hits, other then an OtterBox, you may be SOL.

My favorite case used to be the Neo, until I found the Candyshell. Neo is an awesome case, just a royal pain in the ass to get on and off. Too many parts, and the "I" frame edges crack easy.

i have a rubber case i bought from a NYC street vendor. i think i paid $5, but maybe it was $15. i've dropped my 3GS on concrete and it protected it just fine.

the "colors" too thin for that.
neo won't absorb serious impacts.
pixelskin got awesome covering on the back and sides, not so much on the front.
i never tried the sport-grip,
so the candyshell will be my choice from this list.