Lewis, Telstra has stopped offering 100Mbs plans on new signups. See
here.
Also I feel like I should clarify a few misconceptions I have seen mentioned above:
1. FTTC Distribution Point Unit (DPU) can be up to 110-150m away from your phone socket. This possibly means up to 150m of the old copper.
The pits (DPUs) in the street are small and can only serve 4 houses. You do not necessarily get connected to the one in front of your house. Our distance to DPU is 120m.
2. The VDSL modem for FTTC is supplied by NBN and not by Telstra.
3. While most of people on FTTC can get 100Mbs, not everybody will.
4. When the technician comes to install the NBN they will measure what speed can be obtained. Before that it is just a guess.
My advice... AussieBroadband.