firewall and pack shape for 10G

[u.bodalina () gmail com]

Hi All,
Our current Gateway Firewall (Checkpoint) and packet shaper can handle 1Gbps. Soon our national bandwidth will be 
increased from 5Mbps to 10Gbps.   What solutions are there interms of firewalling and pack shaping for 10G pipes? 
Are there any commercial firewalls and packet shapers that can handle this traffic?
Or would we have to use a custom configured Linux box?
We were told to get rid of our gateway firewall and use BSD firewalls in front of the critical servers. Should we even 
consider this option?

Thanks in advance.