I currently hold a Caltex Star Card from Work and have been using it for the Aurion ever since I got it, just with Vortex 98, which I think is a very good fuel. Whenever I can't find it, which sometimes occurs in the country areas, I use Vortex 95, which has the same detergents, just not the higher octane. Well, there have been some changes with our 'fleet', and there is a big possibility I will soon have to choose between a BP card or a Shell Card. Could people please advise what they think is a 'better' fuel for an Aurion? I have heard great things about BP Ultimate, and have heard that Shell V Power can sometimes be inconsistent. I'm in Sydney, so if anyone knows much about that area, it would be apprecaited. I'd love to hear about peoples experiences with 'high octane' fuels and whether they think the BP or Shell version is better, or if the Caltex Vortex 98 is the best?