I have decided that when I do the
sump/fuge project, I am going to go with a drilled tank. Let's face it, an overflow box is the second best way of doing this, no matter how you slice it. It will be a lot of extra effort, but I want to do it right.
That means drilling the tank.
At least in my never to be humble opinion.
If you have an overflow box and it works for you, outstanding.