Need some suggestions or opinions. I am planning to purchase an IPS gateway device either juniper or tipping point. Or any other brand you all prefer. But heres my situation, I also wanted a device like sophos web security or trend micro web security appliance to sit at the gateway. Mainly to protect guest users and provide web and spam filtering. If I get an IPS device, do I really need an antivirus gateway device or is that kinda redundant. If I dont need an antivirus device, should I go with a dedicated device for website and spam filtering? Thanks in advance.