Any of THESE
Seriously, any of them. You just can't beat canon when looking for an inexpensive point and shoot.
I had an A610 (AA batteries, 6 megapixel) that I would still be happily using had I not drug it through a river. The 6 megapixels gave up great pictures.
Given a choice I will always choose an AA battery model cuz I can just carry extra batteries in my pack, I can't plug a camera into a tree to recharge.
Wanna save money? buy one of those A800s and just call it done.