I'm in love with my 2$ case from Amazon. I had the otterbox case and there was SO many things I didn't like about it. Bulky, covered the ear sensor, and if I would have shaved it, I would have gotten 2 cats, 6 cookies, and 3 pounds of lint. Seriously, everything sticks to it. Plus, you can't slide it in your pocket easily.
One thing I also like about the 2$ case is it's slim and sleek, not sticky. The ear sensor is open, and the volume buttons are open instead of trying to mash them through the case.