I'd recommend McAfee. We use it for our enterprise of over 3000 nodes (enterprise version), we've trialled the home products and it was better than symantec and some others. their signatures are released much quicker.
http://promos.mcafee.com/en-au/lp/3p...aspx?cid=67304
else, look at kaspersky. i've not used it but have heard a lot of good things about it.
https://www.kasperskyanz.com.au/
also lookup antivirus reviews by cnet and others. reviews usually give a good idea.