NetDefend: D-Link Firewall/VPN Solution

NetDefend series are D-Link firewall and VPN solution products. unfortunately D-Link is not a trusted brand in my country but I have received unexpected feedbacks on D-Link firewalls expressing satisfaction. A couple of days ago one of these customers told me that he is experiencing a better performance on their DFL-1500 firewall comparing with their Cisco PIX firewall! I couldn't take this serious but he meant it.
Personally I don't believe that D-Link firewalls deserve to get a better rating than Cisco PIX firewalls but this is a good message for those unfairly underestimating D-Link products.