We usually stock Pioneer and LG burners at our store because they are so reliable, we hardly have any returns. Anyone can suggest other brands that's reliable for stocking? Benq seems to very popular model oversea but not very well in Australia.
Can't say what is cheap down under, but the 1655/111/4570 and the new LG model would all be good choices.
I would avoid the NEC 4570 until the stock firmware is vastly improved. BenQ has been purchased by Liteon so you could just add Liteon; they are very versitle and add bitsetting, media learning, and scanning.