i went to the oxford st store a few months ago when i was in sydney. they have a really nice range of eyelashes, more exciting than mac's. i got a few pairs with feathers and some blue and teal strazz. couldnt bring myself to get any of the other products like eyeshadows and lippies, i think in that sense i prefer MAC as they have a broader range of colour and finishes.
but one thing I would recommend picking up is their magazine, they release it a few times a year and it's got heaps of cool inspirational photoshoots. great to look at when u need some new ideas!
also they offer a rewards card where i think you can get 10% off... not sure on the exact details tho