Hi All,
have a look round and you can see it's all a matter of preference.What's good for one person can be a disaster for others.I won't use Norton because I had a mess up with it.Plenty of others use it with no problems.
I use Kaspersky Security Suite.It works well for me.I know people who have had troubles with it.It depends on how you have your computer configured.Sometimes they work well or they give you a lot of trouble.Kaspersky have a new one on Monday so my opinion may change next week.
Look around at the Free Trials and give them a whirl.You can then use the one that suits you.Plus never be afraid to change if you find something better.That keeps them making better.
Have Fun,
George.