I had drilled and slotted on our LHS. It was a bit louder during hard braking.

I later went back to smooth rotors because the drilled/slotted rotors wore out my front brake pads in 9 months. We typically get 3 years out of the front brakes on the LHS.

Overkill for a daily driver but they do work. I tried seriously abusing the ABS one day and the brakes would not fade or vibrate.