hmm dont touch Mcaffee thats my main advice, I've used Kasperky but didnt like it either. for a nice 1 you could use Avast Anti Virus and Kerio as your firewall, or run
AVG you got that as a freebie and its excellent
but my main advice is DO NOT TOUCH NORTON NOR MCAFFEE, only if you want to have a slower pc and when you want to get rid of it it'll take you ages and more likely result in a reformat