Best Antivirus Engine

[ZeNiX]

I have been using NOD32 2.x for several years.

NOD32 3.x and 4.x gets fat and slow.
And then, I started to use AVAST 4.x on some of my machines.
It worked fine for me, except that it gives too many false alarm on packed files.

Now, I used Kaspersky on most of my computers.
Kaspersky was very slow before.
But now, it is faster and friendly.

I am interested in AVAST 5.0 as well.
But I would wait and see for the time being.