Thanks for sharing your feedback on Trend Micro PCcillin and it's good to hear that you are happy in using it. Different opinions is sure will arise on "which is the best AV" or superior to which..
As long as the user has an up-to-date AV and on-access protection is enabled with email scanner function. It should help to protect ones' system.
With any AV installed in ones' machine is better than nothing.
try trend micro pccillin.....superior to either mcafee or norton