Living in South East Queensland, was getting 17c FiT and 4% off total bill with Origin, but they do not do that plan anymore. This is actually cheaper due to low supply charge. Got an email from Origin, saying my plan is running out and I should visit the energy made easy site to compare. They didn't even make the top 10 list. Asked Origin to match Energy Australia. No dice.
This was by far the best plan when using a spreadsheet. Surprised it didn't make the top of the list:
https://www.energymadeeasy.gov.au/
I suggest you enter usage with 4 bills to make it more accurate over the course of a year.
contract/FIT guarantee period?