I currently live in CLG, internet speeds are around 15 - 16mb/s. Plenty of parks and stuff to do around here. Bike trails nice and close and plenty of public transport to all the important places. I went to a public primary school and then to a private high school. Personally I don't think i will ever move from Adelaide as I love the slow pace and ease of getting everywhere.
The bus service here lately has been pretty **** but as long as you are not too far out of the city it is just as easy to ride or drive in.