CatByte
Hi,
You are welcome
There isn't an antivirus that can catch everything unfortunately, so it's best to use a combination of Antivirus, Firewall, Antispyware, secured router, Web of Trust.
PC Tools has a pretty good reputation.
Personally, I use Microsoft Security Essentials, if I were to pay for an antivirus I would probably buy Kaspersky antivirus.
I don't use a firewall because I am behind a secure router, but if you want the added protection of a firewall, Agnitum Outpost has a very good reputation. I use the paid version of MalwareBytes Antimalware and I use the Web of Trust.
Never use more than one antivirus or Firewall at a time as more than one can cause system slowdowns, conflicts or crashes. Try differnet products, different combinations of products, till you find what works well with your system.
There are lots of extremely good free products out there,
stay safe
~CB