sbiddle: You're pretty much on the edge of coverage from the exchange (which is on the cnr of Waitoa and Moxham)
Despite the fact that I'm on the edge of the exchange's coverage, even with the fault the tech found he said I should be syncing closer to 16Mbit downstream not 11Mbit as we're currently experiencing. Chorus has historical data saying our line has achieved 18Mbit previously.
Not including the path down to the house (and with many assumptions), from the front of my house to the exchange is 600m. With my current attenuation rates and again many assumptions, my connection could theoretically max at 21Mbit.
Prior to our VDSL upgrade, our ADSL connection was syncing at 8Mbit. However, we didn't not have the master filter in place at that time so things could be better now. At this stage I don't want to switch back to ADSL and risk crippling my already bad rates without a "there's nothing we can do in regards to the fault" from Chorus.