I had a good experience with cross-drilled rotors on my last car. I had carbon-fibre/Semi-Metallic pads with it. I didn't have any squeek issue or excess wear. But then again I only drove about 20k on them so I wouldn't have known if they were durable enough. I can see what you mean about xdrilled on a Legacy. I'm looking for more performance than looks.
Any ideas where to get some Sloted Rotors?