Going for a new block I would recommend the hybrid, designed by Ron Nossaman. A custom 9mm Dilignit cap (not bridge capping or pin block material) on a standard multi-lam block.

...If memory serves, Ron has specified what he wants and Dilignit makes it for him, so there may be more to it than just laminations.

Now if only the tuning pin manufacturers would true up their tooling the way that you do we would not be forced to deal with tuning pins that vary in diameter by several thousandths or that are oblong.

David the problem of contaminated taper seats in machinery is one that is carefully avoided in better manufacturing companies. When I worked for Magna for example, no air hoses were allowed near the spindle for cleaning or during a tool change operation. Softer metal chips like brass/bronze/aluminum/CRS have a tendency to stick to the harder shanks and tapers when driven against each other.

Too many folks don't fully understand the cost involved in making super high quality tools, even things like simple drill bits. My complete letter/number drill bit set manufactured by Sheffield cost over $500 20 years ago. The same assortment of bits can also be bought for $49 from china, or for any cost in between by other manufacturers. My bits were used every day for numerous years, drilling alloy steels and materials much tougher than wood and they still work like the day i got them, provided that they are sharpened correctly when needed. If one needs to purchase a new bit after drilling one or even a dozen pin blocks, you have an inferior tool to begin with.

I always felt that Denro pins had too much twist.

I'm not a fan of Denro pins.
Diamond pins are far superior.