Any particular reason why you want to change Emsisoft? It is a solid product with a very good behaviour blocker(updated version of BB coming soon). Fabian is here at MT and if you come across any problems he can help you out. If you pair Emsisoft with Syshardener and Windows Firewall you have a safe pc, assuming your surfing habits are good. But in case you want to try out new suites I would recommend Kaspersky Internet Security and ESET Internet Security. If you don't want to spend money on an AV you can go with AVG Free or Kaspersky Free. They have pretty good detection alongwith very good behaviour blocker. You don't need HitmanPro.Alert and VoodooShield with Emsisoft.