A lot comes down to fuel costs if you are doing lots of travel. Canadian fuel costs are TYPICALLY higher due to taxes including the HST/GST (depends on the province). When we fly, I can find airports with wide ranging costs of fuel, almost always lower than canada (there are exceptions, try some airports in new york where the cost is almost double the equivalent cdn cost). however, on the ground i have ALWAYS found usa gas/diesel better value than canada
In general, i would consume fuel in the usa to travel the distance...
Other costs vary, but typically (depending on your location) the exchange rate follows day to day costs fairly closely. (large ticket items take a while to catch up on exchange rate)