Slots and drilling are simply for looks.  They
actually decreases overall braking effectiveness by
decreasing rotor surface are.  It's the same efeect as
using a small disc.
    Go with a smooth surface and ventilated  disc, and
get a quality pad.
   The best street pads are ceramic, because they are
very quiet, and very low dust.  But they are not always
the best performing pad.

Sounds like you might have a composite disk rotor, (cast iron rotor and
welded steel hat.)  These things scare the hell out of most brake repairmen.
If available you might want to upgrade to a full cast iron rotor.