I'm over here in Oz as well. One of the things that I have taken from reading Alex's thread and a few others is the difference in dealers attitudes over here. I guess that we are a much smaller market & distributors jealously guard their teritories. But honestly the service over here is shocking at times.
& that's before we even start discussing the ridiculous margins that they work with. Different over here, we can't drive over the border to get a better deal.
I would recommend doing all your demoing but at the same time thoroughly research your pricing from overseas sellers. You might find that you are able to step up in the range, for example m3i to m6i, for the same or very similar money.
When I started an upgrade last year I was looking at the Focal Electra 1008be standmounts, but by importing from a dealer in France I ended up with a pair of Focal Diablos. It did push the budget, but they were around 35% cheaper even with inport duties.
I did the same comparison with my amp, but the % difference wasn't enough to warrant the import. I felt that importing speakers was less risky than an electronic device like an amp. Which turned out to be a blessing, but thats another story.
My rule of thumb was if I could negotiate the dealer down to 10 to 15% of the imported cost I would go with them. More than this & you really have to consider going overseas. At the very least you will enter any negotiation with them knowing what is a competitive price.
So thats not to say that there are not good dealers out here, there most definitley are. But know your pricing, be patient, be aggresive in your negotiations. You are the customer, they're not doing you a favour by letting you into their shop!
Good luck, look forward to hearing how you go.