One Sentence: What is there to say, really?
From New York - Canada - at 10:30pm on a Friday night, in July - the wait was approximately 25 minutes, and we were in a slow lane (#1).
From Canada - New York - at 1:30pm on a Sunday afternoon in July - the wait was 15 minutes, were beaten by many cars.
It's a LOT easier than airport customs!
2 tips - 1. The Canadian's asked for your drivers license; and 2. Do NOT take photos - they're serious. We saw someone promptly have to delete the photo they'd just taken.