I have been one of the most vocal about there being no benefit to drilled and slotted rotors except for looks. I still believe that is correct, however I did get seduced by the looks and now have drilled and slotted rotors on my own car. I did it for looks though, and I'm well of the potential pitfalls.
Whatever you end up using, if you do have slotted or drilled and slotted or slotted with some sort of dimple (like EBC or the diamond pattern you referred to) look for something that hase been liberally champhered to help cut down on the stress risers.
You would rally be better off with plain rotors that at the most you have had some color added (zinc plating, anadizing, etc.).
Mine are zinc plated and I have also painted the non friction areas with silver caliper paint. There are those that will say that the paint is not a good idea and will hurt heat transfer, but that is insignificant compared to the damage from drilling and slotting.
