Well, I can only speak to my smoker.. a 30" Masterbuilt analog. So I only have a small half inch vent hole in the top right, on the back panel. Given that, when mine is running perfectly, I have light smoke exited my little back vent, and slightly more (but maybe not enough to call it medium, but almost) from the top and upper right hinge area of the door. I have my door adjusted such that it seals, except for around there... since my analog unit doesn't have any additional venting for air in or out.
And that seems to work great for me. My only issue is that without a mailbox mod, I can only go as low as about 120-140 degrees and still maintain smoking wood chips.
If you either have, or can install an adjustable vent on your smoker, I think you should shoot for smoke generation that is not excessive, but not so little as to be ineffective. I know that is vague. The idea is to have enough airflow to keep your wood smoking and lit, but not so much that it causes it to flame up and ignite, or go out. You just gotta get a feel for it.
I know that when I open the door to my smoker, before it all comes flying out into my face... lol ... it fully fills the smoker box completely. My smoke doesn't move much in the box.. it kinda floats in there, circulating a little bit... and then trickling out the back vent, or up through the tiny door gap.