Pentax Optio 555 review
If you are an advanced amateur who wants full manual control and 2 cm close focusing or 5x zoom in as small a package as possible, you can't beat the 555. Battery life is amazing. A camera you can carry in your pocket all the time.
Focus in low light can cause long shutter lag, but pre-focus using shutter button solves the problem. Low light pictures noisier than some other cameras, but when printed at sizes up to 8x10 noise is not noticeable.