There is this little place in Greenhills Shopping Center near the post office called Siopao Boy by Masuki. Masuki is owned by the descendants of Ma Mon Luk. I remember the big siomai in Assumption and the asado siopao with the sweet sauce which we also used for the siomai. I have feeling Ma Mon Luk was their supplier because the siopao and siomai taste the same!
The Siopao Boy siopao is a smaller version of the BIG siopao in Assumption, with flaked sweet pork asado meat. If you like the siopao in Floating Island, Makati Med, then you will like the one made by Siopao Boy/Masuki.
My favorite siomai in Metro Manila is the one from Kirin in Bonifacio High Street. It has big chunks of pork, glistening fat and fresh shrimps. You can not compare the all meat version of Siopao Boy and Kirin because they are two different kinds.