What Antivirus Software is the best and it has no limited subscription?

Because my choices are Panda, Ad Aware and Bitdefender. But these three has a limited subscription.

So, can anyone tell me what antivirus software has no limited subscription and the performance is superior like Bitdefender? (",)

Somehow, my computer has become infected with Windows Antivirus, a fake antivirus software. It’s asking me for my credit card details, which of course i haven’t given them, but i can’t actually remove the program. It’s not listed in the "remove applications" window from control panel.
Does anyone have any advice?

In particular, I’d like my email inbox to be color-coded or organized into subfolders automatically based on the SIDF and DKIM status of each message, as well as whether I’m on the "To:", "Cc:", or "Bcc:". Is there anything out there?

I has tried some title of Antivirus product, some of them is freeware also. When I tried the Antiviruses, I found out that it’s not always freeware Antivirus is a bad product, and vice versa. Right now, the Antivirus I currently using is Avast! Antivirus home edition. Just want to get opinion about what Antivirus is the best right now to fight those pesky virus out there? I have read many sites that doing Antivirus "benchmarking", but I found a very different result in each sites (different sites = very different results). So I can’t get any conclusion from those websites. Can you share your experience from using Antivirus?