Question : Sonicwall Pro 2040 Content Filter (CFS) question - not sure which one to use.

I have a client with a Sonicwall Pro2040 with CFS enabled but in looking into the options (I did not set this up), I noticed that there were 3 options with CFS being the one that was enabled.  I poked around in the settings and wasn't able to find a list of URLs that were being blocked.  Only a list of checked group's of 'offensive websites' to be blocked.  I also saw options for 2 other services... N2H2 and Websense Enterprise .  

My question is this - which of these 3 is most effective and/or customizable?  If CFS is it, how can I see which sites are being blocked 'out of the box'.

Thanks!

Answer : Sonicwall Pro 2040 Content Filter (CFS) question - not sure which one to use.

websense offers greater configuration and reporting capabilities than CFS.