Even though there were relatively few camera hardware changes between the Samsung Galaxy S2 and the current S3 model, DP Connect rates the S3 in the top 3 smart phones for photographers (at least in its summation at the end of the review).
The Nokia 808 is on top of the heap (no surprise) and the iPhone 5 is also a strong performer. So among these three devices, you can choose the other features that you want, and still know you have a quality camera with you all the time.
Personally, I'm very much enjoying taking pictures with my iPhone 4S. If you're an Instagram user, take a look at my Instagram page (DerrickStory). It's a great way to share your camera phone work with others.