Those Briyani that is nice have the 'dum' title... but i dun know whether that title they give themselves a not... they can just say they are 'dum' but we won't know mah...
Best nasi briyani i gotta say is Yusoff Power briyani and Arbak or isit Abak briyani near the masjid sultan...lotsa meat and rice too if u eat there...
Islamic briyani used to be good but quality dropped in my opinion.