I was looking for a comprehensive security solution that contains a minimum antivirus and a firewall and does not degrade PC performance. After watching the comparative on the net, I hesitated between 2 and chose Bitdefender. The software is easily installed and you can install it on multiple machines. In addition, it is possible to create an account which will allow MyBitdefender geolocate the computer. Bitdefender is actually not resource hungry and performs real-time analysis and further analysis when the PC is not in use. It is possible to migrate the 2014 version to the 2015 release. I recommend this product.