Having tried it many times, as well as most of my friends, which ain't surprising considering a few years ago it reached a point where they were even selling BZP in liquor stores before it was made illegal here in NewZealand.
No one reported it to subjectively be ANY WHERE near mdma, at any dose. I heard more con's than I ever did pro's and the pro's i heard was no more spectacular than moderate mood lift with sketchy stimulation. The most common complaint was inability to sleep, and horrible hangover the next day, considerably worse than mdma.
My own personal experience trying it with a dose over 200mg+ yielded some strong energy, but certainly no empathy or euphoria. This was before I even had tried mdma, and as soon as I did, it blew bzp out of the water. They two compounds are worlds apart in my opinion! I get the feeling generally people don't miss piperazines here in NZ, in fact we have grown to hate the stuff due to it commonly being pressed into pills and sold for top dollar as xtc.