Hi, I don't even know what tier I'm on, but I choose the most expensive plan... and I still get buffering, I have fibre to the premises not to the node so I should have good service, however when watching MotoGP and F1 I still have to connect to my Optus 4G network to get a better viewing.. It appears to me all plans one speed... Slow!! out of three months service it has only worked for 1 month.. calls to technical support proved useless, they will avoid at all costs sending out a technician, spent hours and multiple ph. calls then after 2 months of no internet I had to get a friend look at it and discover the primary port on the NBN box was blown up so he used the aux. port and just like that I had internet again all be it still slow. They still refuse to fix the primary port! Today a 61 minute ph. call to try and cancel subscription... it seems the only person that wants my money is the Lady in cancellations maybe they should promote her to Tech support!