several antivirus i tried but i couldn't reach upto my expectation level, finally i got comodo antivirus installed in my PC it's really awesome, works perfect, i am satisfied with that and i highly recommend that product.
Prevents all viruses, spywares and malwares
Improves performance and efficiency
Fast cloud-based scanning
Detects suspicious hidden files
Protects all the devices.
To know more in detail visit : http://antivirus.comodo.com/