Avira was good, at the time I installed it leader of the pack. But it deteriorated, for example prevention of Shut Down without responding to a dialogue to kill it. Then with the latest release it demanded removal of:
Malwarebytes, Spywareblaster and SpyBot. I refused Avira would no longer work... hello Avast!
It is arguable whether or not you can rely on one product for protection but for sure those three products are very good and have proven themselves. I am not interested in taking a risk. I have had viruses caught by my original AVG but that failed to prevent a nasty root-kit infecting me and thanks to Malwarebytes I got it cleared within a week or two. That was when Avira got installed and I am impressed with it and also with the responsiveness of the forum members.
Thanks all who gave some input here