Being in Toronto your best bet would be Detroit or Cleveland. I think Cleveland and Detroit share a spotbeam, maybe even Buffalo New York I think its on that beam as well.
Your best bets would be Detroit or Toledo. Both are on spotbeam 23, which has the Detroit HD and goes right over top Toronto where as spotbeam 25 which has the Cleveland and Columbus locals just skirts the outside of Toronto. Over in The List is where you can find the spotbeam maps and Here is the map for 23 and Here is the map for 25.
What about with a 1000.4 dish? How do you switch your address to another location, do you just tell them you are at a new address and just make one up?