After months of research, I have picked M. Graham & Co. as my primary watercolour painting brand. I bought fifteen paints initially, then ordered the entire watercolour range. The honey-based formulation is ideal for the way I work. :)
To buy in Australia, visit The Art Shop website. This great store in Victoria carries the entire range of M. Graham professional artist products.
M. Graham & Co.: http://www.mgraham.com/