Can't help you with Adelaide, but I have been on a headset hunt in Melbourne recently...
In Melbourne at Moorabbin Airport there are two shops about 5 mins away from each other, one with the Zulu and one with the Bose. Skylines Aviation has the Bose (guy there was very helpful) and Moorabbin Pilot Shop has the Zulu (MPS is a little room in Tristar aviation, if you think you're in the wrong place, you're actually not I found).
If it helps at all, I thought that they were about the same weight/clamping-pressure and the ANR on both seemed quite good. When I tried on the Bose he had a recording of engine noise that he played to demonstrate the ANR, and all I can say is that my reaction was "WOW" (that was the first time I'd ever tried an ANR headset). At the Zulu shop, they didn't have a recording or anything so it was harder to tell but it seemed the same or at least close to the Bose ANR level (not that I'm an expert, haven't used ANR before).
The main reason I've decided to get a Zulu rather than the Bose was partly the price ($1300 rather than $1500) and it comes with music/bluetooth. I figure that if I fly with it for a bit and hate it I can sell it on eBay and buy a Bose. So the decision is reversible :)
EDIT: I just ordered a Zulu from Sky Shop (http://www.sky shop.com.au/ - take out the space in between sky and shop, if I leave it in it turns into XXXXXXX, not sure why) in QLD - $1250, plus $15 shipping (overnight apparantly). Many places seemed to have the set at $1290, so it seems I did ok price-wise.
I hope this helps
- Darky:cool: