I see.
Well...
It is never an issue that had come up in my use. I have always been able to hit everything I wanted to hit, where I want to hit, but I can certainly see where you are coming from.
They are the only DC gun I have used, and never felt the need to try another, so it could be that I am just ignorant to the greatness that could be another gun, but I stand by my recommendation of em. 
Remains my only DC gun too. Haven't come across another while I had cash to spend.
I've got a good bit of experience with the GunCon, Zapper, and Justifier, though. And I'm reasonably accurate with all of them(not that you have to be terribly precise with a Zapper, but...).
As far as usage patters go...
I tend to fire away from as far back as possible(the end of the room or cable, whichever comes first), since the distance exaggerates your motions and lets you retarget faster.
It probably also makes that 1" diffrence on the AssCatz gun a lot more important for me than for "normal" usage, as I gather most people sit/stand a good bit closer than I do for gun games.