I can recommend "Norton Security with Backup" - available for PC, Mac, as well as android and iphone - and multipack (10 licence) pricing comes out at around $5 per device per year.
We've been running with it or its predecessors for a number of years and it's been faultless
Have you been running that on a Mac? It's the one AV software that most Mac users avoid like the plague.
Phoenix1969, why do you think you need AV software? You might like to have a read here:
http://guides.macrumors.com/Mac_Virus/Malware_FAQ