Advice NPS Hong Kong, travel

Hi people
its been ages but i need soem advice im goign to relocate to New York in about 6 months
but there is a distinc possibilty of me working in Sydney in 6 month stints since i stil have clients down here
i have 2 2nd hand d2x's whcih are costign me heaps to get fixed everytime i return from a big job im thinking of buying a retail D3 and d300 so i can get warranty and nps membership the problem is since im here 6 months and in new york for the next 6 months what the best course of actrion buy in australia get nps warranty here
or buy it from the states and get the american NPS or by from hong kong(ill be there at the end of the month) non warranty take the risk
someone told me way back that nikon austrralia supports warranty for grey products bought in hong kong
im also thinking i can get rid of my other 2 dx's and d200 in hong kong, as trade in, is that a good idea?
thanks in advance
its been ages but i need soem advice im goign to relocate to New York in about 6 months
but there is a distinc possibilty of me working in Sydney in 6 month stints since i stil have clients down here
i have 2 2nd hand d2x's whcih are costign me heaps to get fixed everytime i return from a big job im thinking of buying a retail D3 and d300 so i can get warranty and nps membership the problem is since im here 6 months and in new york for the next 6 months what the best course of actrion buy in australia get nps warranty here
or buy it from the states and get the american NPS or by from hong kong(ill be there at the end of the month) non warranty take the risk
someone told me way back that nikon austrralia supports warranty for grey products bought in hong kong
im also thinking i can get rid of my other 2 dx's and d200 in hong kong, as trade in, is that a good idea?
thanks in advance