A better netstat and is there a SysInternals equiv for Mac?

Hey all

I was trying to capture some network traffic today and needed to find which port my app had bound to. Being new to Mac, I just plonked "netstat -lnap | grep myapp" onto the command line. No love. I scratched my head and read the man for netstat before resorting to using "lsof -i4 -P -n".

Is there a more BSD like netstat?

Further, under windows I often use the excellent SysInternals tools to monitors processes, RAM, network ports etc etc. Is there a similar set of tools for Mac?

Thanks!

Andrew