I am with AAnet
I cant be bothered with ADSL2 because most places I want to download from dont have connections that fast... so anything above 1500 is a waste.....
Anyways, I am on a $49.95 plan.. for that it is 1500/256 and I get 14Gb a month... They only count whichever data stream is bigger, up or downloads.... so if you download 13Gb, and upload 12.... they only count the 13Gb you downloaded... and data between 1AM and 8AM is only counted at 50%.... so great if you are downloading movies and stuff.... Realistically you can get about 20gb of downloads for the 14Gb plan if you do it well....... Its a great plan for using things like bittorrent and stuff...
They have bigger and smaller plans too...
http://www.aanet.com.au/Plan_12.html
The service is ok... I reccommend them to people who dont need to have their hands held....
If you decide to use these guys.... PM me because I get a discount if I recommend someone
