Currently with TPG on their FTTB plans. Service has been fantastic since installation, very enthusiastic technicians involved in the installation process (our building was one of the first in Melbourne to be connected to the FTTB network). Speeds are as promised, even during the day when the Melbourne CBD runs a little slower.
I am yet to use their customer support, but have used their service on other communication services with no such issues to report. I would encourage anyone looking at an NBN service to check if the FTTB service is available in your area. I am genuinely impressed with the product and service offered