Digital Camera's?

I need a digital camera that can take good pictures at night, so what would be my best option in the camera realm?
Preferably for under $150.00

*As a note, I'm using it for mushroom hunting, so the smaller the better.

I have a Cannon SD600, and it is amazing both at night, and during the day. I believe when I purchased the camera it cost 199.00, and that was about six months ago. Good luck!