Performance wise, what instance static mesh works best?

Hi…

i learned a lot about instanced static mesh and wondered what method is the best in the eye of performance.
Both methods use hierarchical instanced static mesh, but the second one looks cleaner for me. Is it still a instance that way, or do i have to do it the first way to
save resources for fps? Maybe all two are wrong. :wink: Thanks for discussion. Martin.

Is it this:

or this: