I've joined the ranks of all you S3 users. Had the phone since Wed. (10/3/12) and I really love it. I've only begun to scratch the surface of what it can do. Will be hanging out here alot to pick up tips, tricks and so on.
^ what he said! Its easier to buy a 30$ case rather than a 300$ screen or 600$ phone.
But glad you enjoy it! And P.S. if you in encounter battery issues, there's a LOT of forums about it. But everything else should be a breeze. PM me if need be.
Ported from my AOKP Build 4 JellyBean Samsung Galaxy S3.