HI, I instructed on the astazou J31 in the RAF for 3 years. Great performance in all areas especially the barrell roll. Only problem was the service-"ability". J41 on the otherhand I believe is awesome on all counts. Sorry, now flying the A345 so cant offer my services as I am tax free. Editing now, by the way, have done perf A and C and sometimes I thought that the J31 on the ground would have out-performed a Warrior and still operate well into the low 20ks.