When we were trying to pick the best prepaid deals on each network, our big issue with Vodafone was that there were no cheap plans with even vaguely decent data allowances. That problem isn't totally solved by upping the data allowance on its $30 plan from 500MB to 1GB, but it's a start.
From now until 31 January 2014, the $30 plan has the increased allowance, as well as $450 of call credit and unlimited Australian SMS. As of tomorrow, all Vodafone prepaid customers have access to 4G. It has to be said: 4G means you'll use your 1GB faster. (This also means the $40 recharge only makes sense right now if you want the extra $300 in call credit, since it also offers 1GB of data.)