No two cameras really look the same no matter how you set them up. The key to using any preset
settings is to know your individual camera and
what it does under all lighting conditions.
As some have pointed out, their presets are nowhere near their normal lighting conditions
when they white balance. THINK in kelvin scale
and learn how these values correspond to your
camera. Once you know what your camera is
giving you in certain lighting situations, you
can then determine when you can and cannot
rely on a preset. For me, it's a crutch that
can burn you if your not careful. The new
sony d-35's have a preset white that goes
up and down the kelvin scale..very nice feature
but again if you don't truly know what those
values look like on that individual camera or
you are not using an accurate monitor, your
flying blind....Long story short, whenever
possible, white balance...