I'm currently with the big T. Need to have a Telstra provider due to no service with any other provider at our house. And Telstra not that brilliant either.
Did a comparison and Nu Mobile appear to have similar offerings to Woolies Mobile. Heard reports about the average support for WM, wondering what peoples experiences with Nu Mobile are? Was positive to be able to chat and get through to them very quickly.
https://www.numobile.com.au/network-coverage
As far as I know Boost are the only other option that use full Telstra network, so whoever else you switch to is likely to be worse coverage than Telstra.