Have you ever worked with Check Point's firewall?
(I don't subscribe to the sub nor have I posted anything in it. I do read it from time to time and find the comments alright from an end-user (ie. sysadmin) point of view.)
There is another guy in this thread who gives a good review saying Checkpoint got good in response to competition. Forti is the value option. And, FTD is looked down upon while ASA has some niches. So, PAN, Checkpoint, and Fortinet appears to be the leaders.