While it is true that Telstra are probably dearer, they have the best coverage.
IF you are only going to be in Major Cities, then it is not a problem, go with one of the cheap ones.
However if you are going bush, Telstra is the only way to go.
Even Optus are adverising now that they can finally cover 96% of the population, but it is the other 4% PLUS all the places where people don't actually live.
