When you say Finest - do you mean the smoothest or the most notches for micro adjustments?
ASV's don't have notches, they have a roller.
So you can move throughout the entire travel of the lever's adjustment range. As opposed to 5 or 6 preset locations like other levers.
Not a huge deal, but helps to get them in the exact spot you want them in.
Levers are a preference, but if you find what you like and fits your hand the best, then you have better control.
I prefer 2 fingers on shortys, having the clutch engage, and front brakes fully applied far away from the bars. That way my 2 fingers on the bars aren't crushed by the levers when shifting or braking.
I also slide the lever perch as far to the center of the handlebars as possible on any bike. But again, that's just my preference.
I had $20 Pazzo copies on a couple bikes and they were fine. I'm not one to buy cheap or imitation parts, but they fit my budget until I could buy others. The cheapos in my opinion had to be just as strong as the stock cast levers. That was later proven true by a member who tested a stock, vs a Pazzo, vs a Pazzo copy. Blanca Busa donated the Pazzo, so he probably knows how to find the thread.