I picked up three cases from Amazon to try out;
Leather w/magnetic flap cover and belt clip ($3)
Haven't had any desire to begin using it. Could begin using it as a murse.
Hard silicone case, snaps together, slides and clips to belt clip ($30)
http://www.amazon.com/Seidio-Innocase-Surface-Holster-Captivate/dp/B00426CRTU/ref=sr_1_21?s=wireless&ie=UTF8&qid=1299096217&sr=1-21Expensive but worth it when I need the phone on my belt and quicker access or if I'm going to have other items in my pockets. Screen faces inward so could potentially record video while walking around if desired. Clip is rotational.
Soft silicone skin ($3)
I find that I use this the most. Hand grips it better. Can set it down and still see the screen. Can set it down with the screen facing downward and the skin keeps the screen from touching. Being flat, the phone sits in my front pocket nicely and I just set it on the console when getting in a car. Won't slide around while traveling.
This one isn't too bulky and even fits in the belt clip of the Seido. What a combo!