Just wanted to warn people about Woosh's claim to offer ADSL2+. My experience, which may differ from other customers, has been that they only offer ADSL connections, even if you live in an area which has had an ADSL2+ upgrade, and have excellent line quality (0dB downstream attenuation). While this is possibly a problem with the port configuration, and therefore Telecom's issue, Woosh will refuse to follow it up with them.
So if you go with Woosh, chances are you will be stuck with maximum sync speeds of 7616/736, no matter how good your line or how close to the exchange you are.
The thread where I initially worked out what was going on is here: http://www.geekzone.co.nz/forums.asp?forumid=49&topicid=58471
I've already talked to Woosh's customer service, but if anyone comes across this thread and has an idea about how I can fix this issue, then please send me a message and let me know! :)