EBC's are crap, they are not supposed to tick, sent mine back under warranty, only got them due to everyone on here raving about them, but will never buy from them again. I wouldn't recommend them to you.
I have heard of drilled discs cracking under heavy use, I have tarox sports japan on the front of my celica, they are drilled and grooved and have had a bit of heavy use and are fine, but I suppose if you had cheaper drilled discs they would crack.
Probably better sticking to plain, but if you want a bit of looks then go for grooved discs