Welcome to BB

Myer and DJ's have all the brands you are talking about. Baby Bunting have a great Sooki Baby range. Milk is a very cute range too!
Absorba is another great brand, they have lovely unisex clothing. Not sure what side of town you are on, there are some great independant baby stores around. Over here in the west Spindleberry and Little 1's have beautiful clothing.
If you are in the east, Maling Rd in Canterbury have great independant baby shops.
Otherwise..online is fantastic. I love Little Sunflowers a shop in the UK, they are reasonable with postage cost as well.