don't know if anyone mentioned it earlier but if you delete your stock samsung gallery and replace it with the one provided here you lose the ability to set your lock screen wallpaper based off of images in your gallery. because of this, im sticking to stock
EDIT: google's camera, while looking slick as hell, has no option to turn off sound. If there is a mod floating around somewhere then disregard this. Tried out photosphere, was turning out great as I was shooting but when it rendered into the final image I only got the ceiling. Last thing and it infuriates me, google's camera is slightly zoomed in compared to samsung' stock camera.
Edit2: k so the camera is slightly zoomed in when taking a picture but when viewing it you see the full image. Also it has no option to store pics on the sdcard