If you're after street looks with no track days (or maybe just once in a yonk) - cross drilled will look good.

If you're after something that will take track day abuse, then just get slotted (No cross drills)

Just a note on cross drills - its got to come pre-drilled from the factory and no just some machining workshop cross drilling it. Improper cross drilling can weaken the rotor structure as you're likely to drill through the internal vanes.