Actually after a couple of hours, W8 is growing on me (no touch screen).
I've been advised by a security expert friend to use the proprietary Defender that is integrated into W8 and can be downloaded as MS Essentials with W7.
Comodo is very easy to move. I have no problem at all with it. I have been using it in one PC for two years now. My kids have it on their PCs and laptops and so does my wife. I find it quite unobtrusive compared to other free ones I have tried.
Avast is the best free one for PC's, imo. I also ditched AVG. However I installed Avast on my mobile phone and it slowed it down so much that I had to uninstall it.
I use it every day and it still irritates me. I have used a touch screen and it is just what it is intended for. The closing of 'apps' is also a pain unless you use Alt F4.
Haystack.
Apologies.
The remove facility has been added long after I installed it.
It did not have it originally.
I'm now on Avast(free) and Private Firewall(free)