If the rumours are true about the camera in the Galaxy S4, then I'd wait for it, because it's going to probably be the best camera in a phone until someone comes out with a better one.
The best camera phone: Nokia Pureview 808 (43 MP sensor with Xenon flash) The best camera phone for video (great recording too) and low light photos: Nokia Lumia 920 with Optical Image Stabilization (I use this one) Just google them and you will agree ... ... like google Connect review: Nokia Lumia 920 Camera Review ...
Nokia 808 Purview is the worlds first and last best mobile with camera -:Camera feature:- Flash Xenon flash Video Recorder 0.3(VGA) front camera 38 MP effective 7152 x 5368 pixels Carl Zeiss optics autofocus, 1/1.2'' sensor size ND filter up to 4x lossless digital zoom geo-tagging face detection 41MP Digital zoom