I'm on a Telstra 3G broadband connection at the moment. Seems OK but takes a while to connect sometimes.
Not sure on coverage though but should be OK. I was in Esperance a couple of weeks ago & it worked fine there so regional coverage might be alright.
Expensive though. I think the package I'm on is $89 a month & that includes 1 whole gig. From there it's $0.25 per MB, so that extra 100MB just cost $25.
we have these for work as well as our office server, we are on a $50 each plan per month and I have been using mine as my main internet for 15mths and never gone over. works in the mount too