I have the following DSL sync stats:
Modulation Type:ADSL_2plus (configured as MultiMode)
Downstream Rate:21062 Kbps
Upstream Rate:1021 Kbps
Downstream Noise Margin:12.8 dB
Upstream Noise Margin:13.1 dB
Downstream Attenuation:5.0 dB
Upstream Attenuation:3.2 dB
Downstream Power:12.4 dBmV
Upstream Power:16.1 dBmV
Any download (and a speedtest from zeus.jetstream.co.nz) doesn't go above 12-13Mbps. Have tried with a TG585v7 and with a WAG310G. Even with multiple downloads the total speed doesn't go above 12-13Mbps.
According to Telecom Wholesale I'm also in the VDSL2+ zone so I should be fairly close to the cabinet.
I don't have any phones connected (I have VoIP) and there's a filter before the ADSL modem. I have interleaving off by default on my 60GB plan ($105/month).