I know there have been a million threads on this topic, but there's just too much variety amongst those threads. I want a nice ultracompact camera for less than $400, preferably 5.0 megapixels or above. Zoom doesn't matter since it's basically 3x optical throughout. What I'm really looking for in the camera is not only the small size, but a fast response time from when I press the shutter to when the camera actually takes the picture. Any suggestions?