Sorry, I rather SBST to buy products that have been proven for
their quality, reliabilty, comfort and durability. Mercedes Benz
buses has proven to be very realiable workhorses for SBST fleet,
especially the O405s and OF1413s. The O405s are still so realiable
after 17 years on the roads, which has proved a very good
investment for SBST.
I hope SBST will continue to use Mercedes Benz buses given the
new generation of O530 Citaro buses and hope so that they will buy
more Citaros to continue the legacy of Mercedes Benz buses in the
SBST fleet since SBS started in 1973. 
But for SMRT, too many Mercedes Benz buses in their fleet and
getting boring. They should change to Scania, Sunlong, Kinglong,
Higer, Yutong or Zhongtong OR maybe even revert back to
Japanese makes like Hino and Nissan UD. 
Citaros will be good but no Citaro Gs. Bendies are not practical in
Singapore.
Though I like the Mercedes-Benz buses as well, but I really hope
you can put an end to all this. How many Citaros do you want SBST
to buy?
And I don't feel SMRT buses majority having Mercedes-Benz buses
to be boring.
To me, Citaro Gs is a must to replace the O405Gs. Otherwise if
the bus fleet is doubled (with rigids only), won't the buses like
be stuck in a jam?