I used drilled disc's once. Once is because on inspection the disc's were cracking between the holes....=junk Since then I use slotted/dipples disc's and I love the funky whizz noise when braking from 100 to 0
Mine is pretty cool too Dave. She was my co-driver on rallys & got her competition license so she could race with me. What is mine is hers too. Yep she may tell me to turn up the radio, but that's OK with me. I'm a very lucky man to have her at my side. Back on topic... Slotted rotors are great, make mine cryo treated.