For the help of anyone interested, I downloaded and installed Comodo. Quite a lengthy procedure. Whilst the blurb on the Comodo page states that the premium is the free edition, this download does not state anywhere, which edition it is. (See picture).
But it does seem to be totally free and unlimited. For 64Bit users, the links take you automatically to the 32bit edition. Scroll to the 64Bit, if that is what you prefer. In the early stages of the install, there is an option to install a time limited version of "GeekBuddy". The is a paid program for optimising your PC. Your choice, I deselected it.
After a hunt, I found this:
http://www.matousec.com/projects/pro...ge/results.php
Interesting. Yes, I know, benchmarks are...
and this:
http://www.consumersearch.com/firewa...ernet-security