Chuck, I was referring to the 2012-15 Trinovid, not the HD. The difference in the focus compared to the UVHD+ is very marginal, but with the nod to the Trinovid (with the stainless steel instead of the titanium rod). However, I totally agree with you that a central locking diopter that doesn't need constant checking is worth trading a little extra smoothness in the focuser for. One gets used to such small differences (given, as you say, that the focuser is very good), but a diopter which moves is a constant PITA!
I may have made it sound worse than it is? While the focus on my 2012-15 Trinovid is much smoother and more fluid, the UV isn't terrible but I definitely prefer the Trinovid in that regard.
My first copy of the EDG (single bridge) had a wandering diopter which was terrible.