These are the 2 best case makers out there. I just got the Seidio for my EVO 4G for my girlfriends phone. My 2 1/2 year old daughter is the ultimate product case tester. We had the phone to my kid and it comes back fine.
I was gonna wait for the OtterBox, but i was really impressed with the Seidio, so i just ordered that one for my EVO yesterday.
http://www.otterbox.com/?cid=GOOTT10...FQFvbAodMxpLXg
http://www.seidioonline.com/