Thanks for all the information, however I made a detailed search & found  out that Bit defender is the best & its cheapest compare to its competitors, but the only problem is don't know where to get it from. I tried Lulu, E-max but all have kaspersky & Norton & Avira and that costly. Not only that all comes with 3pc-1 yr, 1pc-1yr but don't have 1pc-3yr type. Pls help if you got any info.