And that's why he does what he does for a living folks. Great post Bryan.The L will be the least effective in terms of deep bass - but it has the most surface area.
The chunk will reach the deepest assuming the same face dimensions as the straddling panels.
The straddling panels will do 90% of what the chunk will do down to say the 70's then the chunk pulls away.
From a DIY perspective assuming the same material, the chunk will cost 50% more than the straddling panel. The L will cost double what the straddling panel will.