Norton is packed with a lot of feaures , you can read about them - here.
And if I had to have any complaints is on Symantec end because to download a trail for NIS 2011 from Symantec homepage you need a credit card to complete the trail requirements.
And then If you don't like NIS in the 30 days trail period you can cancel your subscription and you won't be charged.
If you do like NIS 2011 , Symantec will just automatically consider that you want to buy it with a 1 year license and will take the money from your credit card.
Symantec is the only company that asks for a credit card before being able to download a simple trail.Although it can been seen as fair by some people,I can tell you that from the marketing point of view this will definitely make some of the potential customers run away from the product and not want to test NIS.
Fortunatly enough their are always some promos, like this one ,that give a
free trail for NIS 2011.
Download NIS 2011 with 90 days trail period from here