Second Pc is laptop which i 'm using in university . Panda offers solid protection for free users but i'm think is good enough for me . In future probably will be replaced an other antivirus .
Since you are an advanced user and you say it's enough then stick with.
For replacing Panda i suggest Comodo,you will be surprised how light it is on the system.
Thanks for sharing.
Maybe you should think to add HTTPS Everywhere to your browsers.
HTTPS Everywhere is a Firefox, Chrome, and Opera extension that encrypts your communications with many major websites, making your browsing more secure : https://www.eff.org/https-everywhere