I have the Seidio Active case in Red. i like it. Had the OB Commuter for my old Inc2. Both are hard shells covering silicone inner shell. However, the OB has a harder outer shell than the Seidio, but left the tops and bottoms only protected by silicone, not the hard case. The Seidio has 6 prongs on the hard shell that wrap around the corners and the middle sides. along with most of the back. The silicone sides have notches to grip it better, although the silicone on the Seidio is slicker. Maybe because the OB was almost a 1yr old. not sure. The red sure is sexy though.
Both cases have the raised edges so the screen won't lay flat on a surface, and the silicone of the Seidio feels thicker, but again, the OB, after a yr is kinda flimsy with the silicone. The OB had covers for the ports, the Seidio does not.
i think I saw a pic (which is why i didn't get it) of the Rezound Commuter case and one entire corner in just silicone