If you're tired of ripping through AAs and your hikes are mostly weekend length or shorter, Canon's SD 890 IS is your camera. It squeezes 10 megapixels, a 5x optical zoom, and image stabilization into a pocket-size unit.
Menus are intuitive, the 2.2-inch screen is big and bright, and one charge of the internal lithium-ion battery nets 300-plus photos. While the SD 890 is not technically waterproof, our sample survived a rainy night outside. It uses universal SD cards.