I am looking for a good case for when I am working out and running. I have read that some people had problems with getting sweat on the iPhone and it ruins the touch screen. So I am looking for a case or armband that is sweat resistant
How are you going to view the screen when it's strapped to your arm or your belt? And do you really want to receive calls while your working out? It's kind of big and heavy to strap to your arm or belt while your working out too. The Shuffle is about the same price as a case and it makes more sense to use the small, light Shuffle during a workout.
I use this http://www.pcmicrostore.com/PartDetail.aspx?q=p:10505153;pl:1 when I'm riding my horse. I have a crystal cover on the phone for talking (and sweating) in the heat.
I wouldn't trust this for rain, but my phone has held up to dust, etc, with this set up.