Don't know about Oz/NZ to much but in the Uk you are fine as long as your vision is good with contacts. I can recommend focus night and day. You can wear them for a month 24/7 and then you throw them away. They let loads of oxygen through and I never ever had problems although I used to have lots of trouble with 'normal' disposables. I know you can get them in Oz, not sure about Nz though.