I am running RDA front and rear discs on my car and completely happy with both...
I was running ebc red stuff up front and green stuff on rear, but have since changed my front pads to Lucas. As they have similar heat rating as red stuff and 1/3 of the price..
If you dont use your car for track work or hills work then black stuff should be ok. But i would've destroyed them or me with low heat rated pads.
Hope this helps... 
