As someone who makes a living out of desktop support to SME's, I really love everyone who doesn't use a proper third party internet security/anti virus company - you pay my bills end of the month!
Got a Cylance home-use key from a Client I worked on years back and been using that - you can put 10 computers on the licence. I do find it more sensitive than other antivirus products but it is easily manageable from its web-interface.