Let's put it this way.
In the future the old double decks in 72 has to go. And BSEP
comes in to add newbus to the service. Whether rare or not
does not matter anyway because future it will be deployed during
the Volvo B9TL Wright fleet lifespan....
Well, it is a no-brainer that almost every services with DDs
will get Wright in the end, comeon we will have 1000 wrights by
2015.
People say rare/uncommon is referring to now i guess,
hahaha.