I am a DSLRs user and decided I needed a proper pocket camera (i.e.: no more flimsy mobile phone cameras) for those cases where is not practical having a DSLR and still be able to get decent quality pictures; and this camera delivers dutifully.
If you have a similar profile then chances are you already looked at all the plethora of cameras available today and may have narrowed your list down to: Canon SX220 HD, Panasonic DMC-TZ20, Sony DSC-HX9V and obviously this Nikon Coolpix S9100.
Give or take some figures all these cameras have very similar specs. I tried them hands-on at the local shop and the final decision for me was between Canon and Nikon. The Canon is better looking, more ergonomic, has manual functions and slips nicely in your pocket; the Nikon is a bit bulkier but still fits in your pocket. I really wanted to buy the Canon, but: a) it has an awkward wide-screen 3inch display, which means normal pictures look smaller than on the Nikon 3inch display. b) menus and commands are much simpler and intuitive on the Nikon, by miles! and c) The Nikon features a very clever Easy Panoramic stitching function which I tend to use often when hiking or cycling to scenic places (Canon's panoramic version is very poor, almost unusable.
So, two weeks on and I am very happy with my purchase. Images are coming out very sharp, very low noise, well illuminated and with good white balance. True, auto-focus in macro can be improved but there are easy ways around it, the same way that you have to learn setting Scenes to shoot what you are imagining, which I find good fun.
I would have given it 5 stars had it included an external battery charger (not the USB in-camera charging which is rather restricting).