After being away for three countries and seven years, Mme 13F and I moved back to Canada in mid-1999. Itemize everything, with estimated values, and carry the list with you when you return. It is useful if you indicate on the list the items with you and which items are to follow in a separate shipment. Don't try to count socks and underwear too precisely, especially the things you are carrying with you in suitcases, but it is important to show that you've gone through the effort of preparing an inventory.
Make sure you identify yourself to the immigration officer as a returning Canadian. You will be sent to secondary screening to complete some extra paperwork. This paperwork will be needed to clear your separate shipment (if you have one).
Medical Insurance: be aware that there will be a three month waiting period until provincial coverage such as OHIP kicks in, therefore you may want to buy private medical insurance to covetr the gap. From my 1999 research, I recall that Quebec does not have a waiting period.
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13F