Generally speaking, if I can get it in this country I do, just because it saves me a lot in shipping. If I have a number of selections from Canada or share shipping with another person or two, it makes it worthwhile. Years ago, when the US Dollar was stronger, ordering from Canada was a better deal. I think right now the order is at par (same) at least that's what the Lily Nook website states. Though I think the dollar has gained some ground.
Overall, I'd say B &D sends larger bulbs, but both companies are quite good.
Now that I've thoroughly confused you.....