Are you guys talking about the one with the (wooden basket) cross pattern design on the back? It's the one that feels like smooth rubber. "Shell/Holster Combo", UPC code is 7 38516 35151 3.
This is the one I got, I like it. The phone is already slim, and this doesn't make it much thicker. It comes in 2 pieces, 1 covers most of the back of the phone (except speaker & mic), and wraps around the front so that if you actually place the screen facing down, it would be about 3mm above the surface.
The 2nd piece is the holster, which clips to the belt. Both have the same material, but the surface where your screen faces (other side of belt clip) when you slide it in is made of some type of cloth. That surface also has a red sticker saying your screen should face that surface when you slide it in.
The camera area has a hump at the top, but it's actually not that prominent even with the case, so the phone still slides into jeans pocket easily, unless you like to were jeans that fits tightly. I bought it for the back-cover part, the belt holster I don't use.
I like this one particularly because of the material. The other cases feels like it's made from brittle plastic. This one can flex without feeling like it will crack, which should help with long term durability. It's thin and feels soft to the touch.
Reference link:
Shell Holster Combo | Droid X Case
(I brought it alone with my phone, not from this site)
There are others that I looked at, one of which was the leather one, but it's thick, sloppy (edges not very smooth), and not very refined. Someone posted some pics, through here:
Your choice for best Droid X case...and why? - Android Forums
(Imagine _trying_ to press the buttons on the phone, such as the volume)