I went with the Otterbox Defender. I don't have the problem of it being too slippery like some others have had. The belt clip is a little clumsy but it goes well when I attach it to my purse. This case is not suitable if you have a 3rd party battery that requires a different backing.
I am a new Galaxy s3 owner and love my new Otterbox Defender...but...I have tried and tried and I can't remove it. Do you have problems removing yours if you need to? Do you have to pry it off? I've tried everything I can think of including watching videos and using the suggestions that Otterbox emailed me.