Dunno about best, but I've had hands-on with a LG GX300. 2MP camera with LED flash. ~5k, if I recall correctly. It may be slightly outdated by now, so look for its successors.
Samsung Chat if you want QWERTY.
Samsung Star II Duos C6712 - 3MP camera, 3-inch touch screen.
Nokia C2-03 if you want a touchscreen and a physical keypad as well.