I'm hard on my phones and they get dropped a lot! Just bought new Razr and had to have a good case that wasn't too bulky but did the job. After searching online and in a couple stores the Otterbox Commuter is what I settled on. I'm very happy with it, it makes the phone just the right size and grippiness to hold and it still fits in carpenter pants side pockets! The Defender was too big and way overkill and wouldn't fit in pockets as well. My phone has been dropped from about 3 feet high several times onto concrete and asphalt and no damage. I installed the included screen saver stick on peice, but have since bought an anti-glare version for $2 shipped from Amazon.
Bought my Otterbox Commuter at local Verizon store for about $25 out the door, I've been a customer for years and I asked the guy if he needed my phone number and he said sure and gave me great deal on it.
The other case you mentioned is interesting but hard to see exactly how it's made and I don't need the thing to prop it up, I'm sure I'd break it off anyways.
Go to the store and check em out, see which looks better for your use, but I'd go with the Otterbox again. I see they also have a Reflex Series which is between the Commuter and the top level Defender, might be good for you. Here's the comparison of all the Otterboxes:
dangit I cant' post outside links yet.