HI I feel i should put my hat into the ring and say that I like the free avast 2014 gui I like it for a few reasons it is simple to use and navigate I should now I beta tested it you now. The setup is easy to use and it installs fast and it updates fast as well. The only thing I have a complaint about is that it for some reason it will not let me use ie 9 in windows Vista. I must say though I have been with avast for years I started back when they first launched 4.8 and I have never looked back and it has saved my butt a few times as well so I must say in closing that it is a quality product and best of all it is free.
Thanks avast have a good week