Still working on the issue with some angles but pretty happy with this kind of result.
BTW, those are 5mm cubes making up the stack on the left. They are measuring in at 4.97mm x 5.02mm x 4.96mm. I think that qualifies as reasonably good for dimensional accuracy as well.
Some more calibration objects, including my ongoing problems, are shown in the second image. The surface finish test, left most is pretty good and the Marvin is great but for the ridge above his left eye. The big problem are the edges of the pyramid. I am assuming this is ooze but have not been able to get rid of it with the various ooze settings.
Finally, a couple more calibration objects. Obviously the very extreme angle has an issue but I would never design an angle like that anyway.