case for iPod Touch

I have ordered an 8GB iPod Touch from a "freebie" site which I should have in a few weeks, and I was wondering what kind of case I should get for it I am hearing a lot of stuff about the invisibleSHIELD, and Griffen's cases. I don't really like the idea of invisibleSHIELD so I am either leaning toward a Griffen case, or a Casemate because I currently have a 30gb video ipod that has a Casemate that I found on the ground that was brand spankin new and it has been a pretty durable case. If anyone has any suggestions on a case or any other please post.