Pros: Takes great photos without preconfiguring camera - smile detection is a fabulous feature
Cons: touchscreen should be more sensitive, camera delays before taking photo
Worth spending the extra $ for the S4000. Battery holds charge for weeks, pictures are crisp and well lit in all enviroments. The smile detection system adds a delay in taking photo but is a great picure. Navigating the touchscreen menu is a little tricky at first, but gets easier after practice.