Good Work Chris
Im one for brakes too
Cant say I wreck them as quick as you though. I have cracked discs before in my Audi.
I use the DBA 5000 series two-peice rotar, done a few trackdays on these along with ds2500 pads, Was doing 50-60 min sessions at brands (indy circuit, very hard on brakes) they were capable of doing 10-12 really hard laps 57-59secs before getting a bit hot then 3 slower laps and back on it
Maybe you should try a split rotor disc to get rid of a bit more heat? My brother has the single peice dbas on his 320bhp astra vxr and has also managed to kill them in 5k on the road so maybe there not quite up to scratch for what we want them to be