I know bugger all about Brisbane shops (and even less about Sydney), so it's probably just as well you posted it here. BTW, if you feel like a couple of rides around the Gold Coast, drop me a line (it's only an hour train ride from Brisbane, and the train carries bikes for free!). It's definitely worth the effort - everything from cruises alongside the blue South Pacific to 1,000 metre mountain climbs in the rainforest. There is not a riding taste that isn't catered for around here.