Which is the best complete anti virus ?

Can anybody tell be the best antivirus to use whice will give me maximum protection while not putting much load on system speed?

(Money is not a constraint)

kaspersky ? bit degender ? Mc afee ? Trend micro ?

Which is the best complete anti virus ?free spyware remover

DEFINATLY nod32!! there is a free trial.. the updates are tiny, its fast and reliable

Which is the best complete anti virus ?ktm

McAfee or Norton Virus

I have BOTH.
I've always been a fan of NORTON, but why don't you give AVG a try? They have a free version that allows you to do unlimited updates.
It really depends on what operating system you have. So it is better to try the free ones available and choose the one that suits you best. Free edition is good and enough for homes,if you need it for an office, buy it. Check out http://blog.360.yahoo.com/blog-sAFtLsc8e... for more details.
spyware doctor
Norton 360 and 2008 are both great apps. These new versions of Norton offer better performance and will make good use of your system resources.

Kaspersky would be my second choice. It has won many awards for great virus protection.

McAfee and Trend Micro scored poorly on my tests. The scans took too long and missed some of my test files.
kaspersky is the best antivirus in the world but it is costly