grenow: Update: the install went very well. Nice guy from Downer, lots of signal up on the roof, so he wired everything up, and then... Speeds were dire. Worse than our old ADSL.
Turns out we're seeing the Greta Valley tower (at 45km range), not the Waipara Tower (at 14km), because the Waipara tower doesn't have an antenna facing our way. And the GV tower hasn't been RBI upgraded yet - if it ever will be. I think it is included in the RBI roll out, to judge by the Vodafone maps, but not in the next 12 months.
So we remain Conklined for the foreseeable future. I will explore other options. Who knows, maybe there's someone who wants to stick a gigabit wireless antenna up on the hills behind me.
I won't be holding my breath.
What a let-down.

Did you have to pay for the install or buy out of a contract?