Get either, but be prepared to go through pads/rotors quicker. Pads, due to the more aggressive "bite" that slotted/drilled rotors have on the pad, and rotors given that warpage among the slotted/drilled type seems to be far more prevalent than among high-quality blanks.
Many folks have talked about wet-weather breaking being much better with slotted/drilled rotors and I've either heard or read this from a reputable source somewhere in the past, I just can't recollect the who's or where's of the information.
Th reason Brembo cross-drilled rotors you see on Porsche's don't warp anywhere near as much as CNC'd rotors is that they are fabricated as such from the factory, not drilled/slotted after the treating/cooling process.
If it were me and I had to have one of the two, I'd go slotted over cross-drilled. There's less disruption of the overall rotor.
FWIW.