On the surface so many 3x zoom compact digicams look virtually identical. How do you tell them apart, and what really separates one 3x zoom budget digicam from the next? A lot of times it comes down to the little things, like menu navigation, fit and finish, and price, that make one compact camera a better deal than the next. Here we look at two cameras that at first glance could be mistaken for one another -- the Pentax Optio M30 (street $174.95) and the Casio Exilim EXZ75 (street $229.99), to see if there's really a difference beneath their almost identical skins. Read the whole article test here