I've been really happy with one of these from SuperCheap last few years Matt:
http://www.supercheapauto.com.au/onl...ecommendations
Used to have a CTEK, which is a more expensive supposedly higher quality, but only lasted a couple of years. The SCA has been great. Cooling fan, can select how many AMPs to charge on - great if you're on a generator with low output.