Need AV with Minimal Performance Impact

Tried Avast and AVG, and found them to be real performance hogs - especially during startup and web surfing.

Settled on free "Panda Cloud AV". Seems very non-intrusive. Perhaps it doesn't do as much as others, but provides some piece of mind. This, coupled with some common-sense will do the job for me.

Thanks to all for suggestions.
--
Gerry