But it's a very dangerous rut to get caught up in, and becomes easier to get obsessed with making the perfect negative than it does to really THINK hard about the kinds of images you're making and why.
Bonk,
Before you begin. IMO, the ZS is more about predictability and consistency-------not perfection. The optimum negative can, however, lead you to a perfect (in your mind's eye so to speak) print because the flexibility within the printing process does not require a perfect negative. I don't know any photographer who is happy printing difficult negatives. The ZS is one path you can take that will lead to predictable and consistent results in the exoposure and development of b&w film.
Good luck and that was my last response (I hope)! Good discussion. In the ZS the spot meter is your friend; in BTZS, the incident meter is your friend. If you don't get intimately acquainted with one of them, then that wonderful image you witnessed on the groundglass will stay on the groundglass rather than be transferred to your negative.

Chuck