Drilled tend to crack around the holes, only micro cracks, but have had some split with a 2mm gap opening up in the split.
Dimpled and or grooved would be a lot better, but get wide grooved ones so they don't fill up easy with brake dust.
I just use cheapo discs and dimple them, but the best ones I like now are Mintex, and ace prices too, ebay is your friend.
Had Mintex on my dads 3 door for 5 years now, still perfect.
tabetha