Thank you for your inputs. With regards to the A330 specifically, the theory is to remain clean as then power will be low as the drag will be less and once managed speed is selected and then gear down the gear would act as a brake. I personally have been selecting option one and if the speed refuses to trend towards Vapp I extend the speed brake and then take final flap. The A330 is particularly unique in that it is still a CAT C aircraft and has very low approach speeds compared to the A320.