Choosing and installing AVG protection

I am currently using a system (Russia based) which I would like to change and have been recommended AVG by a friend. Q1. Not sure whether I should use the free installation or whether I should have something I have to pay for if it is better. Incidentally, my current contract is for 3 PCs. Q2. If I download an AVG product do I have to first disconnect my existing protection or can I download the AVG product first and then dispose of my current system? I am afraid my current system won't allow a new anti-virus system in.

Hello Timothy,
We're glad to help you.

  1. AVG AntiVirus FREE includes our intelligent antivirus features that detect viruses, malware, spyware, ransomware, phishing, and other threats in real-time. It contains the basic protection to your Computer.  Only basic features are enabled for AVG AntiVirus FREE which is Computer and Web & Email protection.
    Our premium features are disable in AVG AntiVirus FREE, If you've purchased and upgraded your Protection, you can use all the premium antivirus features. AVG Internet Security (Multi-Devices) can be used on various platforms like Windows Pc's, Mac Pc's, Android & Ios Mobiles.
  2. Using multiple antivirus programs on the same PC might conflict with each other and cause various issues such as false-positive detections, performance degradation, system instability occurs, etc.,
    To get rid of this, I'd strongly recommend you to use one antivirus program on your computer. 
We could not find the subscription on the account that you used for the AVG community. Hence, I have sent you an email requesting few details to locate your subscription and also sent you an additional support. Please check for the email and revert to us.
Thank you.