Nikon Canada's service can be a little hit or miss. I have had good experiences mostly getting lenses repaired (re-calibrated). They took in my old beat up 70-200 VR and returned it to me looking almost new. I live close enough to drive to their depot in Mississauga, which saves me the shipping costs.
That is my nit to pick with Nikon (and Canon), is this garbage about the consumer paying for shipping for warranty work, especially for a manufacturers defect. I recently bought an X-Pro1 and the warranty not only states that Fuji pays for shipping, but they also have a one week turn around period, which if they can't meet, they will give you a loaner camera!
My D800e worked perfectly out of the box, though I found myself shooting dreaded test charts to be sure due to the known issue in early models. I always buy from a retailer who has a 10 day exchange policy.