Advantages of Xymon vs Nagios?

I have almost completely phased out nagios. I work at a financial services Company and security is one of our top concerns.Having the agents send to the server and not having to open any additional ports is a big plus. I put together a powerpoint presentation for management explaining why I wanted to move to xymon, and after looking at alternatives. here are some of the text portions

opsView -

OMD -

HTH