Started on the Big Z today. Quality, fit, and finish are top notch. The sides of the super structures are separate detail panels applied to the hull. The edges are beveled resulting in excellent fit. The side trenches assemble the same way. They are also keyed so you can't put them in the wrong place or position. For me, I'll be building the major sub assemblies then drilling and running fiber. I'll then assemble the sub assemblies.
And for a fun comparison, here is the lower hull with the new Revell SD.