bossman,
I concur with the others who suggest going with the CCA manual if you're going to pick one for the standard for your association.
One of the advantages is that, in addition to 2-man mechanics, it also covers 3, 4, and 6 man mechanics. While 2-man is certainly more common, for some tournaments, HS playoffs, and a lot of college ball uses something other than 2-man.
Personally, I find the diagrams in the CCA manual a little better than the PBUC red book.
You can get a peek at a few pages of the new JEA mechanics manual here:
Jim Evans Academy of Professional Umpiring
A little pricey if you're planning to get one for each member of the association, but I would imagine it is outstanding. I'm hoping Santa brings me one this year.
JM