I would like to put my phone is some sort of case that will give it alittle protection and alittle grip. I would also like to put it on my belt at times. So far, the Defender case from Otterbox seems to fit the bill - case adds grip on back, comes with belt clip. Is there any other options that are less expensive or the same but a thinner case? I'm not opposed to a leather type case on my belt. Thoughts?