My car is a 1999 V6 Vienta and I always use V/Power, mainly cause my wife shops at Coles and I enjoy the 4c discount. It would appear that its six of one and half a dozen of the other when it comes to brand names. However, I have been advised that V/Power and I believe other high octane brands use beneficial additives in their top product, plus there is, according to tests that I have read (providing I don't go swapping and changing every time I fill up the ECU will adjust to the new conditions) resulting in an increase of 4kilowats of power and I think it was 5nts of torque. Without the proper equipment to do a meaningful check those figures must represent an improvement in both performance and economy. As they say use the best and forget the rest!!!! If it makes you happy, use it . :P I don't have a choice, its a 98 only car now, or else kaboom! :P But it just shows that although there is only a 1 or 2 refineries that we get all our fuels here in brissy, its different even with the same octane reading.