Type of wing carrythrough?

What type of wing carrythrough most homebuilts used? Pros and Cons of
various types?
How exactly "wing box carrythrough" work within homebuilt?
Bending beam carrythrough seems to be the best choice, but what are the pros
and cons about this?
Strut brace types are out of question because of high drag.
If beading beam carrythrough is used in high wing plane, does that affect
the headroom?
Any other methods that I am not aware of?
Toks