as for me, im searching for Corsair CX430 V2 at my area stores, single of then didnt sell this psu...
As for entry level, i suggest you for Corsair CX500 V2 cuz it is powerful enough and cheap for your rig in single rail. but, better off with dual +12V rail for safety through.
i do not recommend CX430 V2 for your rig cuz you will have tight upgrade or low wattage space unless you do not attempt to upgrade for at least 3 years.
well, depends to your budget. this is the website for Corsair CX series (sorry, no Australian site. just use money converter) http://www.corsair.com/en/power-supply-units/cx-series-psu.html