Whatever model phone you choose, be sure to actually hold one in your hands before you buy it. Even if you plan to purchase online, and even after reading dozens of, say, Motorola v505 reviews, still be sure to check one out in person at your local phone or electronics store.
Its important to get a feel for how the buttons feel to your fingers. Are they too close together? Too small or too big? Is the screen big enough for you to make out all of the script? Can it manage all of the colors you need to make your pictures visible?