Did Comodo do something to put you off, or perhaps you are just curious to check out how they compare?
Here's a link directly to the Total Security 360 Anitvirus I use. Make sure to get the one called Total, otherwise you'll get an essential version which is slimmed down in features.
It's got ads but honestly I think they are about as unobtrusive as they could get. Avast and other software drove me mad with pop-ups and nags for upgrading or offering to run special checks, optimisations and generally were to shouty for my taste, grabbing my attention when all I wanted was for it to leave me alone and do it's job.
I only recommend this for PC and Mac as I was very disappointed in the version for Android.