The thread was not really meant as a what one to run. More of who's done the two methods and how did they work for you. Had to write a novel only to confuse and make perfect nonsense!
I used to do the 1/2 of idle vacuum PV pick. It actually makes tuning harder. You end up with more jet and bigger squirters to cover the hole in the fuel curve from opening the PV way too late.
How the 1/2 idle vacuum got started I do not know. I do know it's wrong.
I have about 15 inches at cruise and I use a 10.5 because that's all I could find. When I get a minute, I'm going to make up a test rig and try either changing springs or mixing and matching what I can to get closer to 12.5 opening.
I now set my cruise A/F ratio with the main jets. You'll be surprised how small the MJ can be if the PV opens at the correct time, and you tune for WOT with the power valve restricter channel.
You'll most likely be able to use a smaller pump nozzle if you get the PV opening sooner/at the correct time.