I use Kaspersky which cost me $39.90.
It does not seem to have much (if any effect) on speed.
Although it may cause longer boot up times.
It also checks for other types of malware (not just viruses).

On 23 May 2014, at 5:08 pm, Peter Curtis <pe...@augold.com.au> wrote:

> Hi everyone (Ronni in particular)
> There have been a lot of warnings about Mac eventually losing it’s protection 
> against virus’s, and suggestions one should look at using some form of virus 
> protection.
> On some investigation, I decided to give Avira a try but find it quite 
> intrusive (slowing down the computer in many instances)
> I was wondering what the general consensus was on this subject? and in 
> particular, any views of Avira?
> Kind regards
> Peter
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Regards,
Stephen Chape

Mac by choice
Windows because my employer knew no better

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