I love double stacks! They have always attracted me to South Australia - especially National Rail/PN service MP5/PM5.
Australian companies certain embrace brightly coloured containers when compared to the 'Yanks'. This aspect makes for a rainbow of colours especially when containers are freshly painted.
A few people have contacted me about posting some mid 2000 double stack photos, so here are three posts all from March 2006, taken just north of Adelaide in the Two Wells area.
Enjoy! (I certainly did).