Today I m sharing my experience on buy any Antivirus for you laptop or pc. I m using asus laptop Model X550C from more than 4 years and my laptop is still in awesome condition no virus, no lags nothing its working completely fine because of NPAV antivirus I m using this antivirus from the day I purchased the laptop. It has so many features like net protection, parental control, cloud scan, malware scan and so on. Price of the one year NPAV antivirus is just 500 Rs. Rather than this my second suggestion for antivirus will be Quick Heal. Quick Heal also really but its pretty expection as compare to the NPAV. So I suggest you can use NPAv for you any laptop or desktop for long time without any lag in your PC for sure.