I like those TPU gel case. I have been using them on Nexus One, My touch 4G, G2x, and even xoom. They are snug fit, won't make the device bulky.
I will still get a case . Accident is accident. You never drop your phone b4 doesn't mean you won't drop it one day accidentally. Since the front gorilla glass is scratch free, with the back and edge wrapped around, the phone is protected.
I also found out the plastic edge makes the device easier to lean on anything for different viewing angles.