Avast vs. AntiVir

OK . . . it seems AVG is going by the way side and people are switching to either Avast or AntiVir. Questions:

Pro and con for both . . .

User friendly . . .

Most secure . . .

Less resources . . .

and

Which do you use.

Thanks

Tommy to avoid yet another thread discussing either avira or avast can I suggest you read ( and particpate) in these ongoing threads

http://forum.piriform.com/index.php?showtopic=16177

http://forum.piriform.com/index.php?showtopic=16172