Just to follow up my email. Thank you all for your advices and proposals.
 
I am currently trying a Cisco ASA5510. Features are pretty neat and the CLI is not bad. I am probably going to go with it.
 
Cheers.
 
Simon 

2009/9/16 Christian Kuster (chkuster) <chkuster@cisco.com>

Hi

Here you find the information you do not seem to find for ASA. Everything there (pps, throuput etc):

 

http://www.cisco.com/en/US/products/ps6120/prod_models_comparison.html

 

 

Cheers

Christian