Thanks again guys.
I'm trying to spot any patterns in the choices of ball-head or pan & tilt choices people make. How confounding!
Wooden tripods have a certain panache, although if stability is a compromise with the modern ball heads............I feel nervous with a ball-head although there's plenty of positives about these.
Maybe photographers who don't like pan & tilt because they are inconvenient. I daresay I'll settle for one - maybe the Manfrotto type with the hex plate as mentioned above......until I can afford one like Ole's