Quite right - the first one that is approved by canberra is probably the best one to get.
Importing is good if you want to save money, if you can wait atleast 2 months and if you want to choose from a very very wide selecting of cars, colours etc. But locally is also good in the sense that if you buy one thats already here, you get to test drive it, check it for faults etc. Plus its also good if you cant wait (like i was when i was looking for my car ) Where are you located? The guys and girls on the forum will be able to help with dealers/importers you can check out.
When going for a dealer, take Merli's list of things to check: http://www.skylinesaustralia.com/forums/in...showtopic=35129
This is what I used when I went looking for the car, and boy did it help heaps (thanks merli!)! But having said that, I would also suggest you talk to the guys at j-spec and allblitz, they know their skylines as well. Perhaps go on one of the cruises or meets and see the cars that have been imported by them.
As for getting the car tested by RACV etc - you have to be careful. Sometimes they dont understand japanese cars. Hence, before you decide to buy or import, test drive a few - listen, feel, see - how the car performs.
Hope this helps. Let us know how it goes
M