Trend Titanium Pro
I am still holding on to Trend AV. The newest and easiest version of Trend's old PC-cillin is Titanium Pro...a breeze to install and works in the back ground without need for any further interference by the user...any interference...save for setup parameters.
But, it costs a few shekles!
If there are any drawbacks to using Trend products, it is that they do not like play nice in the sand box with others. It's it, or nothing!