I previously had slotted/cross-drilled discs with Bendix Ultimates and had no problems. They eventually wore down and I have since replaced them with DBA slotted dics. I have noticed no discearnable difference between the two. This also from several track sessions at Wakefield and also one at Oran Park.
I have used the DBA drilled and slotted discs for sometime now. I find them to be very good. Especially on twisty, downhill mountain roads. No fade! Any of the Bendix performance type pads seem to work well with these discs.