Who does not like free? Seriously, take a look around through the forum, there are many options available beside the two you listed, test a few, to see how they work for you and your needs. As far as the trust issue, i would follow Umbras advice!
Free I would suggest CIS.If you would like to try ESET Smart Security for 90 days or Avira Internet Security for 6 months,send me a PM and I will hook you up