my dad bought a set of drilled brakes for his Saab 93 (a daily driver, commuter, pusts 170miles every day on it) and he LOVES his drilled brakes, BUT... theres at least a full 10-15mm gap between the edge of the rotor, and the last hole... and belive me, hes had to stop from 100+ to 40 and 50mph pretty quick and it works NICE.
but he also spent the money for QUALITY rotors and QUALITY pads....