I tried the AVG linkscanner a while back and it seemed very good until one day when the AVG servers were down. My browsing slowed to a crawl and was almost impossible to do. I dumped it immediately.
HP6140 Laptop, AMD A8-3500M Quad Core APU, 6GB RAM, Windows 7 Home Premium 64 SP1, IE10 & Outlook 2007, Comodo Internet Security 6.3, MBAM on demand
Google/Asus Nexus 7 tablet, Tegra 3 quad core 1.3ghz, 32GB storage, Android 4.3, Dolphin browser, TrustGo Mobile Security
HP 5215us laptop, AMD Turion64 single core CPU, 2GB RAM, Windows 8.1 pro 32 bit, IE11 & Outlook 2007, Comodo Internet Security 6.3--- All machines behind a NAT router