I have zero experience with "drilled" rotors, nor would I care to. I did larger slotted 2 piece lightweight rotors on the A4 though. My issue with "drilled" rotors is simple, it can only "hurt" and cannot help anything. To me, it's akin to adding a 50lb ricer wing to a Civic, and you are better off stock nearly every time.
OEM Porsche rotors have very small -->CAST<-- holes, which run along the reinforced veins to aid in cooling. 99% of aftermarket rotors people acquire are little more than improperly drilled blanks which "look cool" and just hurt the rotors ability to sink heat properly before cracking.
Few people will push their brakes hard enough to even notice or care, but I am very hard on brakes even in street driving. Once you've cracked a OEM solid rotor from street driving, or boiled fluid, you tend to care about brakes.
If it works for you, then by all means, enjoy. I enjoy my cars' suspension and brakes nearly every day, and use them, clouds of brake dust and all.