I really like the TPU cases they sell on ebay. I bought the hard bling, soft silicone and a couple of others from ebay (they are cheap so I tried lots) but the TPU ones are the best IMO. Good protection, smooth but not slippery, not mushy like silicone and does not add bulk like the hard cases. Also its fairly easy on and off, so if you change batts alot its good.
They are like $5 and they come in lots of colors so you could buy all the colors and still be cheaper the if you buy at VZW store
This is the one im rocking now...blue is cool