Sarah, I dont mean to complicate matters all the more, but I think that a spot meter is all that anyone would need, but it would take a good deal of practice and understanding to get to that point. One nice thing about incident metering is that it measures available light rather than reflected light, so what you read is usually pretty accurate without compensation. The nice thing about a spot meter is that you can decide how the scene will be rendered very precisely, but requires that you compensate the exposure. Given that you seem a bit new to this, I'd suggest an incident meter. But if you understand reflective metering and exposure compensation, I'd go with a spot meter. These handheld average reflective meters are useful for quick exposure measurements when you don't have a built-in meter, which you should, provided it is functioning properly.