I double fist most days. One glass 1/3 foam and the other a perfect pour.
When I changed my 3/8" beverage tubing from 5' to 6', in a 34F temp kegerator at about 12 psi, it pretty much ended the first glass full-of-foam problem for me, and honestly, besides the increased flow restriction, I believe that the longer tubing holds the cold better too!
I'm in the Morticai camp - much of the time fewer ounces (normally 6 - 9), more pours.