Unless it is a very simple and unimportant print, I usually try to get longer exposure time.
When it's single digit seconds, dodging will be very difficult especially when I have multiple places to dodge. Also, if I keep the aperture the same, burning will also be very critical in timing. When I was using mechanical timers, mechanical error, combined with ramp up time of the lamp itself, the results weren't identical even if I expose it for the same time (according to the timer setting). At less than 10 seconds, "just a little darker" or "lighter" is very difficult for the same reason.
I'm trying to achieve perfection as I see it. I have no room in my system to think if the numbers are odd or even.