The type of internet product your business needs will depend on your usage requirements. If you plan to use the internet for functions such as online banking and emailing customers, an ADSL connection is the way to go. If you are sending a lot of data to head office, have staff working remotely or you are running an email exchange server you will need an Ethernet connection.
Arrow is also an accredited supplier of the NBN.
You also need to consider the time frame for installation which can vary from days to weeks. You may need an interim solution such as Mobile Broadband.